diff --git a/app/components/check_answers_summary_list_card_component.html.erb b/app/components/check_answers_summary_list_card_component.html.erb
index 9b0c67872..d04283939 100644
--- a/app/components/check_answers_summary_list_card_component.html.erb
+++ b/app/components/check_answers_summary_list_card_component.html.erb
@@ -1,39 +1,41 @@
-<div class="x-govuk-summary-card govuk-!-margin-bottom-6">
-  <% if applicable_questions.first.check_answers_card_number != 0 && applicable_questions.first.check_answers_card_number.present? %>
-    <div class="x-govuk-summary-card__header">
-      <% if applicable_questions.first.check_answers_card_number == 1 %>
-        <h3 class="x-govuk-summary-card__title">Lead tenant</h3>
-      <% end %>
-      <% if applicable_questions.first.check_answers_card_number > 1 %>
-        <h3 class="x-govuk-summary-card__title">Person <%= applicable_questions.first.check_answers_card_number %></h3>
-      <% end %>
-    </div>
-  <% end %>
-  <div class="x-govuk-summary-card__body">
-    <%= govuk_summary_list do |summary_list| %>
-      <% applicable_questions.each do |question| %>
-        <% summary_list.row do |row| %>
-          <% row.key { question.check_answer_label.to_s.presence || question.header.to_s } %>
-          <% row.value do %>
-            <span class="govuk-!-margin-right-4"><%= get_answer_label(question) %></span>
-            <% extra_value = question.get_extra_check_answer_value(log) %>
-            <% if extra_value %>
-              <span class="govuk-!-font-weight-regular app-!-colour-muted"><%= extra_value %></span>
+<% if applicable_questions.first %>
+  <div class="x-govuk-summary-card govuk-!-margin-bottom-6">
+    <% if applicable_questions.first.check_answers_card_number != 0 && applicable_questions.first.check_answers_card_number.present? %>
+      <div class="x-govuk-summary-card__header">
+        <% if applicable_questions.first.check_answers_card_number == 1 %>
+          <h3 class="x-govuk-summary-card__title">Lead tenant</h3>
+        <% end %>
+        <% if applicable_questions.first.check_answers_card_number > 1 %>
+          <h3 class="x-govuk-summary-card__title">Person <%= applicable_questions.first.check_answers_card_number %></h3>
+        <% end %>
+      </div>
+    <% end %>
+    <div class="x-govuk-summary-card__body">
+      <%= govuk_summary_list do |summary_list| %>
+        <% applicable_questions.each do |question| %>
+          <% summary_list.row do |row| %>
+            <% row.key { question.check_answer_label.to_s.presence || question.header.to_s } %>
+            <% row.value do %>
+              <span class="govuk-!-margin-right-4"><%= get_answer_label(question) %></span>
+              <% extra_value = question.get_extra_check_answer_value(log) %>
+              <% if extra_value %>
+                <span class="govuk-!-font-weight-regular app-!-colour-muted"><%= extra_value %></span>
+              <% end %>
+              <br>
+              <% question.get_inferred_answers(log).each do |inferred_answer| %>
+                <span class="govuk-!-font-weight-regular app-!-colour-muted"><%= inferred_answer %></span>
+              <% end %>
             <% end %>
-            <br>
-            <% question.get_inferred_answers(log).each do |inferred_answer| %>
-              <span class="govuk-!-font-weight-regular app-!-colour-muted"><%= inferred_answer %></span>
+            <% if @log.collection_period_open? %>
+              <% row.action(
+                text: question.action_text(log),
+                href: question.action_href(log, question.page.id),
+                visually_hidden_text: question.check_answer_label.to_s.downcase,
+              ) %>
             <% end %>
           <% end %>
-          <% if @log.collection_period_open? %>
-            <% row.action(
-              text: question.action_text(log),
-              href: question.action_href(log, question.page.id),
-              visually_hidden_text: question.check_answer_label.to_s.downcase,
-            ) %>
-          <% end %>
         <% end %>
       <% end %>
-    <% end %>
+    </div>
   </div>
-</div>
+<% end %>
diff --git a/app/models/form/sales/pages/person1_age.rb b/app/models/form/sales/pages/person1_age.rb
deleted file mode 100644
index d37533683..000000000
--- a/app/models/form/sales/pages/person1_age.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-class Form::Sales::Pages::Person1Age < ::Form::Page
-  def initialize(id, hsh, subsection)
-    super
-    @id = "person_1_age"
-    @header = ""
-    @description = ""
-    @subsection = subsection
-    @depends_on = [
-      { "details_known_1" => 1 },
-    ]
-  end
-
-  def questions
-    @questions ||= [
-      Form::Sales::Questions::Person1AgeKnown.new(nil, nil, self),
-      Form::Sales::Questions::Person1Age.new(nil, nil, self),
-    ]
-  end
-end
diff --git a/app/models/form/sales/pages/person2_age.rb b/app/models/form/sales/pages/person2_age.rb
deleted file mode 100644
index 7654d6e46..000000000
--- a/app/models/form/sales/pages/person2_age.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-class Form::Sales::Pages::Person2Age < ::Form::Page
-  def initialize(id, hsh, subsection)
-    super
-    @id = "person_2_age"
-    @header = ""
-    @description = ""
-    @subsection = subsection
-    @depends_on = [
-      { "details_known_2" => 1 },
-    ]
-  end
-
-  def questions
-    @questions ||= [
-      Form::Sales::Questions::Person2AgeKnown.new(nil, nil, self),
-      Form::Sales::Questions::Person2Age.new(nil, nil, self),
-    ]
-  end
-end
diff --git a/app/models/form/sales/pages/person3_age.rb b/app/models/form/sales/pages/person3_age.rb
deleted file mode 100644
index 965427e67..000000000
--- a/app/models/form/sales/pages/person3_age.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-class Form::Sales::Pages::Person3Age < ::Form::Page
-  def initialize(id, hsh, subsection)
-    super
-    @id = "person_3_age"
-    @header = ""
-    @description = ""
-    @subsection = subsection
-    @depends_on = [
-      { "details_known_3" => 1 },
-    ]
-  end
-
-  def questions
-    @questions ||= [
-      Form::Sales::Questions::Person3AgeKnown.new(nil, nil, self),
-      Form::Sales::Questions::Person3Age.new(nil, nil, self),
-    ]
-  end
-end
diff --git a/app/models/form/sales/pages/person4_age.rb b/app/models/form/sales/pages/person4_age.rb
deleted file mode 100644
index 282699e44..000000000
--- a/app/models/form/sales/pages/person4_age.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-class Form::Sales::Pages::Person4Age < ::Form::Page
-  def initialize(id, hsh, subsection)
-    super
-    @id = "person_4_age"
-    @header = ""
-    @description = ""
-    @subsection = subsection
-    @depends_on = [
-      { "details_known_4" => 1 },
-    ]
-  end
-
-  def questions
-    @questions ||= [
-      Form::Sales::Questions::Person4AgeKnown.new(nil, nil, self),
-      Form::Sales::Questions::Person4Age.new(nil, nil, self),
-    ]
-  end
-end
diff --git a/app/models/form/sales/pages/person_age.rb b/app/models/form/sales/pages/person_age.rb
new file mode 100644
index 000000000..b25284685
--- /dev/null
+++ b/app/models/form/sales/pages/person_age.rb
@@ -0,0 +1,29 @@
+class Form::Sales::Pages::PersonAge < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @header = ""
+    @description = ""
+    @subsection = subsection
+    @depends_on = [
+      { "details_known_#{person_display_number(PERSON_INDEX)}" => 1, "jointpur" => joint_purchase? ? 1 : 2 },
+    ]
+  end
+
+  PERSON_INDEX = {
+    "person_1_age" => 2,
+    "person_2_age" => 3,
+    "person_3_age" => 4,
+    "person_4_age" => 5,
+    "person_1_age_joint_purchase" => 3,
+    "person_2_age_joint_purchase" => 4,
+    "person_3_age_joint_purchase" => 5,
+    "person_4_age_joint_purchase" => 6,
+  }.freeze
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::PersonAgeKnown.new("age#{person_database_number(PERSON_INDEX)}_known", nil, self),
+      Form::Sales::Questions::PersonAge.new("age#{person_database_number(PERSON_INDEX)}", nil, self),
+    ]
+  end
+end
diff --git a/app/models/form/sales/questions/person1_age.rb b/app/models/form/sales/questions/person1_age.rb
deleted file mode 100644
index aa12c948a..000000000
--- a/app/models/form/sales/questions/person1_age.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-class Form::Sales::Questions::Person1Age < ::Form::Question
-  def initialize(id, hsh, page)
-    super
-    @id = "age3"
-    @check_answer_label = "Person 1’s age"
-    @header = "Age"
-    @type = "numeric"
-    @page = page
-    @width = 3
-    @inferred_check_answers_value = {
-      "condition" => { "age3_known" => 1 },
-      "value" => "Not known",
-    }
-    @check_answers_card_number = 3
-  end
-end
diff --git a/app/models/form/sales/questions/person1_age_known.rb b/app/models/form/sales/questions/person1_age_known.rb
deleted file mode 100644
index 3db103ab5..000000000
--- a/app/models/form/sales/questions/person1_age_known.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-class Form::Sales::Questions::Person1AgeKnown < ::Form::Question
-  def initialize(id, hsh, page)
-    super
-    @id = "age3_known"
-    @check_answer_label = "Person 1’s age known?"
-    @header = "Do you know person 1’s age?"
-    @type = "radio"
-    @answer_options = ANSWER_OPTIONS
-    @page = page
-    @hint_text = ""
-    @conditional_for = {
-      "age3" => [0],
-    }
-    @hidden_in_check_answers = {
-      "depends_on" => [
-        {
-          "age3_known" => 0,
-        },
-        {
-          "age3_known" => 1,
-        },
-      ],
-    }
-    @check_answers_card_number = 3
-  end
-
-  ANSWER_OPTIONS = {
-    "0" => { "value" => "Yes" },
-    "1" => { "value" => "No" },
-  }.freeze
-end
diff --git a/app/models/form/sales/questions/person2_age.rb b/app/models/form/sales/questions/person2_age.rb
deleted file mode 100644
index a421b625a..000000000
--- a/app/models/form/sales/questions/person2_age.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-class Form::Sales::Questions::Person2Age < ::Form::Question
-  def initialize(id, hsh, page)
-    super
-    @id = "age4"
-    @check_answer_label = "Person 2’s age"
-    @header = "Age"
-    @type = "numeric"
-    @page = page
-    @width = 3
-    @inferred_check_answers_value = {
-      "condition" => { "age4_known" => 1 },
-      "value" => "Not known",
-    }
-    @check_answers_card_number = 4
-  end
-end
diff --git a/app/models/form/sales/questions/person2_age_known.rb b/app/models/form/sales/questions/person2_age_known.rb
deleted file mode 100644
index 613312f45..000000000
--- a/app/models/form/sales/questions/person2_age_known.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-class Form::Sales::Questions::Person2AgeKnown < ::Form::Question
-  def initialize(id, hsh, page)
-    super
-    @id = "age4_known"
-    @check_answer_label = "Person 2’s age known?"
-    @header = "Do you know person 2’s age?"
-    @type = "radio"
-    @answer_options = ANSWER_OPTIONS
-    @page = page
-    @hint_text = ""
-    @conditional_for = {
-      "age4" => [0],
-    }
-    @hidden_in_check_answers = {
-      "depends_on" => [
-        {
-          "age4_known" => 0,
-        },
-        {
-          "age4_known" => 1,
-        },
-      ],
-    }
-    @check_answers_card_number = 4
-  end
-
-  ANSWER_OPTIONS = {
-    "0" => { "value" => "Yes" },
-    "1" => { "value" => "No" },
-  }.freeze
-end
diff --git a/app/models/form/sales/questions/person3_age.rb b/app/models/form/sales/questions/person3_age.rb
deleted file mode 100644
index 139b4de16..000000000
--- a/app/models/form/sales/questions/person3_age.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-class Form::Sales::Questions::Person3Age < ::Form::Question
-  def initialize(id, hsh, page)
-    super
-    @id = "age5"
-    @check_answer_label = "Person 3’s age"
-    @header = "Age"
-    @type = "numeric"
-    @page = page
-    @width = 3
-    @inferred_check_answers_value = {
-      "condition" => { "age5_known" => 1 },
-      "value" => "Not known",
-    }
-    @check_answers_card_number = 5
-  end
-end
diff --git a/app/models/form/sales/questions/person3_age_known.rb b/app/models/form/sales/questions/person3_age_known.rb
deleted file mode 100644
index 78bdff239..000000000
--- a/app/models/form/sales/questions/person3_age_known.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-class Form::Sales::Questions::Person3AgeKnown < ::Form::Question
-  def initialize(id, hsh, page)
-    super
-    @id = "age5_known"
-    @check_answer_label = "Person 3’s age known?"
-    @header = "Do you know person 3’s age?"
-    @type = "radio"
-    @answer_options = ANSWER_OPTIONS
-    @page = page
-    @hint_text = ""
-    @conditional_for = {
-      "age5" => [0],
-    }
-    @hidden_in_check_answers = {
-      "depends_on" => [
-        {
-          "age5_known" => 0,
-        },
-        {
-          "age5_known" => 1,
-        },
-      ],
-    }
-    @check_answers_card_number = 5
-  end
-
-  ANSWER_OPTIONS = {
-    "0" => { "value" => "Yes" },
-    "1" => { "value" => "No" },
-  }.freeze
-end
diff --git a/app/models/form/sales/questions/person4_age.rb b/app/models/form/sales/questions/person4_age.rb
deleted file mode 100644
index bf7675026..000000000
--- a/app/models/form/sales/questions/person4_age.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-class Form::Sales::Questions::Person4Age < ::Form::Question
-  def initialize(id, hsh, page)
-    super
-    @id = "age6"
-    @check_answer_label = "Person 4’s age"
-    @header = "Age"
-    @type = "numeric"
-    @page = page
-    @width = 3
-    @inferred_check_answers_value = {
-      "condition" => { "age6_known" => 1 },
-      "value" => "Not known",
-    }
-    @check_answers_card_number = 6
-  end
-end
diff --git a/app/models/form/sales/questions/person4_age_known.rb b/app/models/form/sales/questions/person4_age_known.rb
deleted file mode 100644
index 240e1e930..000000000
--- a/app/models/form/sales/questions/person4_age_known.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-class Form::Sales::Questions::Person4AgeKnown < ::Form::Question
-  def initialize(id, hsh, page)
-    super
-    @id = "age6_known"
-    @check_answer_label = "Person 4’s age known?"
-    @header = "Do you know person 4’s age?"
-    @type = "radio"
-    @answer_options = ANSWER_OPTIONS
-    @page = page
-    @hint_text = ""
-    @conditional_for = {
-      "age6" => [0],
-    }
-    @hidden_in_check_answers = {
-      "depends_on" => [
-        {
-          "age6_known" => 0,
-        },
-        {
-          "age6_known" => 1,
-        },
-      ],
-    }
-    @check_answers_card_number = 6
-  end
-
-  ANSWER_OPTIONS = {
-    "0" => { "value" => "Yes" },
-    "1" => { "value" => "No" },
-  }.freeze
-end
diff --git a/app/models/form/sales/questions/person_age.rb b/app/models/form/sales/questions/person_age.rb
new file mode 100644
index 000000000..2e776b2d0
--- /dev/null
+++ b/app/models/form/sales/questions/person_age.rb
@@ -0,0 +1,23 @@
+class Form::Sales::Questions::PersonAge < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @check_answer_label = "Person #{person_display_number(PERSON_INDEX)}’s age"
+    @header = "Age"
+    @type = "numeric"
+    @page = page
+    @width = 3
+    @inferred_check_answers_value = {
+      "condition" => { "age#{person_database_number(PERSON_INDEX)}_known" => 1 },
+      "value" => "Not known",
+    }
+    @check_answers_card_number = person_database_number(PERSON_INDEX)
+  end
+
+  PERSON_INDEX = {
+    "age2" => 2,
+    "age3" => 3,
+    "age4" => 4,
+    "age5" => 5,
+    "age6" => 6,
+  }.freeze
+end
diff --git a/app/models/form/sales/questions/person_age_known.rb b/app/models/form/sales/questions/person_age_known.rb
new file mode 100644
index 000000000..be69a84c8
--- /dev/null
+++ b/app/models/form/sales/questions/person_age_known.rb
@@ -0,0 +1,38 @@
+class Form::Sales::Questions::PersonAgeKnown < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @check_answer_label = "Person #{person_display_number(PERSON_INDEX)}’s age known?"
+    @header = "Do you know person #{person_display_number(PERSON_INDEX)}’s age?"
+    @type = "radio"
+    @answer_options = ANSWER_OPTIONS
+    @page = page
+    @hint_text = ""
+    @conditional_for = {
+      "age#{person_database_number(PERSON_INDEX)}" => [0],
+    }
+    @hidden_in_check_answers = {
+      "depends_on" => [
+        {
+          "age#{person_database_number(PERSON_INDEX)}_known" => 0,
+        },
+        {
+          "age#{person_database_number(PERSON_INDEX)}_known" => 1,
+        },
+      ],
+    }
+    @check_answers_card_number = person_database_number(PERSON_INDEX)
+  end
+
+  ANSWER_OPTIONS = {
+    "0" => { "value" => "Yes" },
+    "1" => { "value" => "No" },
+  }.freeze
+
+  PERSON_INDEX = {
+    "age2_known" => 2,
+    "age3_known" => 3,
+    "age4_known" => 4,
+    "age5_known" => 5,
+    "age6_known" => 6,
+  }.freeze
+end
diff --git a/app/models/form/sales/subsections/household_characteristics.rb b/app/models/form/sales/subsections/household_characteristics.rb
index 65af1044b..7d6e6fb42 100644
--- a/app/models/form/sales/subsections/household_characteristics.rb
+++ b/app/models/form/sales/subsections/household_characteristics.rb
@@ -30,21 +30,25 @@ class Form::Sales::Subsections::HouseholdCharacteristics < ::Form::Subsection
       Form::Sales::Pages::Buyer2LiveInProperty.new(nil, nil, self),
       Form::Sales::Pages::NumberOfOthersInProperty.new(nil, nil, self),
       Form::Sales::Pages::Person1Known.new(nil, nil, self),
-      Form::Sales::Pages::Person1Age.new(nil, nil, self),
+      Form::Sales::Pages::PersonAge.new("person_1_age", nil, self),
+      Form::Sales::Pages::PersonAge.new("person_1_age_joint_purchase", nil, self),
       Form::Sales::Pages::Person1GenderIdentity.new(nil, nil, self),
       Form::Sales::Pages::Person1GenderIdentityJointPurchase.new(nil, nil, self),
       Form::Sales::Pages::PersonWorkingSituation.new("person_1_working_situation", nil, self),
       Form::Sales::Pages::PersonWorkingSituation.new("person_1_working_situation_joint_purchase", nil, self),
       Form::Sales::Pages::Person2Known.new(nil, nil, self),
-      Form::Sales::Pages::Person2Age.new(nil, nil, self),
+      Form::Sales::Pages::PersonAge.new("person_2_age", nil, self),
+      Form::Sales::Pages::PersonAge.new("person_2_age_joint_purchase", nil, self),
       Form::Sales::Pages::PersonWorkingSituation.new("person_2_working_situation", nil, self),
       Form::Sales::Pages::PersonWorkingSituation.new("person_2_working_situation_joint_purchase", nil, self),
       Form::Sales::Pages::Person3Known.new(nil, nil, self),
-      Form::Sales::Pages::Person3Age.new(nil, nil, self),
+      Form::Sales::Pages::PersonAge.new("person_3_age", nil, self),
+      Form::Sales::Pages::PersonAge.new("person_3_age_joint_purchase", nil, self),
       Form::Sales::Pages::PersonWorkingSituation.new("person_3_working_situation", nil, self),
       Form::Sales::Pages::PersonWorkingSituation.new("person_3_working_situation_joint_purchase", nil, self),
       Form::Sales::Pages::Person4Known.new(nil, nil, self),
-      Form::Sales::Pages::Person4Age.new(nil, nil, self),
+      Form::Sales::Pages::PersonAge.new("person_4_age", nil, self),
+      Form::Sales::Pages::PersonAge.new("person_4_age_joint_purchase", nil, self),
       Form::Sales::Pages::PersonWorkingSituation.new("person_4_working_situation", nil, self),
       Form::Sales::Pages::PersonWorkingSituation.new("person_4_working_situation_joint_purchase", nil, self),
     ]
diff --git a/spec/models/form/sales/pages/person1_age_spec.rb b/spec/models/form/sales/pages/person1_age_spec.rb
deleted file mode 100644
index 553a7cff4..000000000
--- a/spec/models/form/sales/pages/person1_age_spec.rb
+++ /dev/null
@@ -1,37 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Pages::Person1Age, type: :model do
-  subject(:page) { described_class.new(page_id, page_definition, subsection) }
-
-  let(:page_id) { nil }
-  let(:page_definition) { nil }
-  let(:subsection) { instance_double(Form::Subsection) }
-
-  it "has correct subsection" do
-    expect(page.subsection).to eq(subsection)
-  end
-
-  it "has correct questions" do
-    expect(page.questions.map(&:id)).to eq(%w[age3_known age3])
-  end
-
-  it "has the correct id" do
-    expect(page.id).to eq("person_1_age")
-  end
-
-  it "has the correct header" do
-    expect(page.header).to eq("")
-  end
-
-  it "has the correct description" do
-    expect(page.description).to eq("")
-  end
-
-  it "has correct depends_on" do
-    expect(page.depends_on).to eq(
-      [
-        { "details_known_1" => 1 },
-      ],
-    )
-  end
-end
diff --git a/spec/models/form/sales/pages/person2_age_spec.rb b/spec/models/form/sales/pages/person2_age_spec.rb
deleted file mode 100644
index 85d2813f1..000000000
--- a/spec/models/form/sales/pages/person2_age_spec.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Pages::Person2Age, type: :model do
-  subject(:page) { described_class.new(page_id, page_definition, subsection) }
-
-  let(:page_id) { nil }
-  let(:page_definition) { nil }
-  let(:subsection) { instance_double(Form::Subsection) }
-
-  it "has correct subsection" do
-    expect(page.subsection).to eq(subsection)
-  end
-
-  it "has correct questions" do
-    expect(page.questions.map(&:id)).to eq(%w[age4_known age4])
-  end
-
-  it "has the correct id" do
-    expect(page.id).to eq("person_2_age")
-  end
-
-  it "has the correct header" do
-    expect(page.header).to eq("")
-  end
-
-  it "has the correct description" do
-    expect(page.description).to eq("")
-  end
-
-  it "has correct depends_on" do
-    expect(page.depends_on).to eq(
-      [{ "details_known_2" => 1 }],
-    )
-  end
-end
diff --git a/spec/models/form/sales/pages/person3_age_spec.rb b/spec/models/form/sales/pages/person3_age_spec.rb
deleted file mode 100644
index 4cb16be5e..000000000
--- a/spec/models/form/sales/pages/person3_age_spec.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Pages::Person3Age, type: :model do
-  subject(:page) { described_class.new(page_id, page_definition, subsection) }
-
-  let(:page_id) { nil }
-  let(:page_definition) { nil }
-  let(:subsection) { instance_double(Form::Subsection) }
-
-  it "has correct subsection" do
-    expect(page.subsection).to eq(subsection)
-  end
-
-  it "has correct questions" do
-    expect(page.questions.map(&:id)).to eq(%w[age5_known age5])
-  end
-
-  it "has the correct id" do
-    expect(page.id).to eq("person_3_age")
-  end
-
-  it "has the correct header" do
-    expect(page.header).to eq("")
-  end
-
-  it "has the correct description" do
-    expect(page.description).to eq("")
-  end
-
-  it "has correct depends_on" do
-    expect(page.depends_on).to eq(
-      [{ "details_known_3" => 1 }],
-    )
-  end
-end
diff --git a/spec/models/form/sales/pages/person4_age_spec.rb b/spec/models/form/sales/pages/person4_age_spec.rb
deleted file mode 100644
index 530e9ad22..000000000
--- a/spec/models/form/sales/pages/person4_age_spec.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Pages::Person4Age, type: :model do
-  subject(:page) { described_class.new(page_id, page_definition, subsection) }
-
-  let(:page_id) { nil }
-  let(:page_definition) { nil }
-  let(:subsection) { instance_double(Form::Subsection) }
-
-  it "has correct subsection" do
-    expect(page.subsection).to eq(subsection)
-  end
-
-  it "has correct questions" do
-    expect(page.questions.map(&:id)).to eq(%w[age6_known age6])
-  end
-
-  it "has the correct id" do
-    expect(page.id).to eq("person_4_age")
-  end
-
-  it "has the correct header" do
-    expect(page.header).to eq("")
-  end
-
-  it "has the correct description" do
-    expect(page.description).to eq("")
-  end
-
-  it "has correct depends_on" do
-    expect(page.depends_on).to eq(
-      [{ "details_known_4" => 1 }],
-    )
-  end
-end
diff --git a/spec/models/form/sales/pages/person_age_spec.rb b/spec/models/form/sales/pages/person_age_spec.rb
new file mode 100644
index 000000000..21255e80e
--- /dev/null
+++ b/spec/models/form/sales/pages/person_age_spec.rb
@@ -0,0 +1,185 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Pages::PersonAge, type: :model do
+  subject(:page) { described_class.new(page_id, page_definition, subsection) }
+
+  let(:page_id) { "person_1_age" }
+  let(:page_definition) { nil }
+  let(:subsection) { instance_double(Form::Subsection) }
+
+  it "has correct subsection" do
+    expect(page.subsection).to eq(subsection)
+  end
+
+  it "has the correct header" do
+    expect(page.header).to eq("")
+  end
+
+  it "has the correct description" do
+    expect(page.description).to eq("")
+  end
+
+  context "with a non joint purchase" do
+    context "and person 1" do
+      let(:page_id) { "person_1_age" }
+
+      it "has correct questions" do
+        expect(page.questions.map(&:id)).to eq(%w[age2_known age2])
+      end
+
+      it "has the correct id" do
+        expect(page.id).to eq("person_1_age")
+      end
+
+      it "has correct depends_on" do
+        expect(page.depends_on).to eq(
+          [
+            { "details_known_1" => 1, "jointpur" => 2 },
+          ],
+        )
+      end
+    end
+
+    context "and person 2" do
+      let(:page_id) { "person_2_age" }
+
+      it "has correct questions" do
+        expect(page.questions.map(&:id)).to eq(%w[age3_known age3])
+      end
+
+      it "has the correct id" do
+        expect(page.id).to eq("person_2_age")
+      end
+
+      it "has correct depends_on" do
+        expect(page.depends_on).to eq(
+          [
+            { "details_known_2" => 1, "jointpur" => 2 },
+          ],
+        )
+      end
+    end
+
+    context "and person 3" do
+      let(:page_id) { "person_3_age" }
+
+      it "has correct questions" do
+        expect(page.questions.map(&:id)).to eq(%w[age4_known age4])
+      end
+
+      it "has the correct id" do
+        expect(page.id).to eq("person_3_age")
+      end
+
+      it "has correct depends_on" do
+        expect(page.depends_on).to eq(
+          [
+            { "details_known_3" => 1, "jointpur" => 2 },
+          ],
+        )
+      end
+    end
+
+    context "and person 4" do
+      let(:page_id) { "person_4_age" }
+
+      it "has correct questions" do
+        expect(page.questions.map(&:id)).to eq(%w[age5_known age5])
+      end
+
+      it "has the correct id" do
+        expect(page.id).to eq("person_4_age")
+      end
+
+      it "has correct depends_on" do
+        expect(page.depends_on).to eq(
+          [
+            { "details_known_4" => 1, "jointpur" => 2 },
+          ],
+        )
+      end
+    end
+  end
+
+  context "with joint purchase" do
+    context "and person 1" do
+      let(:page_id) { "person_1_age_joint_purchase" }
+
+      it "has correct questions" do
+        expect(page.questions.map(&:id)).to eq(%w[age3_known age3])
+      end
+
+      it "has the correct id" do
+        expect(page.id).to eq("person_1_age_joint_purchase")
+      end
+
+      it "has correct depends_on" do
+        expect(page.depends_on).to eq(
+          [
+            { "details_known_1" => 1, "jointpur" => 1 },
+          ],
+        )
+      end
+    end
+
+    context "and person 2" do
+      let(:page_id) { "person_2_age_joint_purchase" }
+
+      it "has correct questions" do
+        expect(page.questions.map(&:id)).to eq(%w[age4_known age4])
+      end
+
+      it "has the correct id" do
+        expect(page.id).to eq("person_2_age_joint_purchase")
+      end
+
+      it "has correct depends_on" do
+        expect(page.depends_on).to eq(
+          [
+            { "details_known_2" => 1, "jointpur" => 1 },
+          ],
+        )
+      end
+    end
+
+    context "and person 3" do
+      let(:page_id) { "person_3_age_joint_purchase" }
+
+      it "has correct questions" do
+        expect(page.questions.map(&:id)).to eq(%w[age5_known age5])
+      end
+
+      it "has the correct id" do
+        expect(page.id).to eq("person_3_age_joint_purchase")
+      end
+
+      it "has correct depends_on" do
+        expect(page.depends_on).to eq(
+          [
+            { "details_known_3" => 1, "jointpur" => 1 },
+          ],
+        )
+      end
+    end
+
+    context "and person 4" do
+      let(:page_id) { "person_4_age_joint_purchase" }
+
+      it "has correct questions" do
+        expect(page.questions.map(&:id)).to eq(%w[age6_known age6])
+      end
+
+      it "has the correct id" do
+        expect(page.id).to eq("person_4_age_joint_purchase")
+      end
+
+      it "has correct depends_on" do
+        expect(page.depends_on).to eq(
+          [
+            { "details_known_4" => 1, "jointpur" => 1 },
+          ],
+        )
+      end
+    end
+  end
+end
diff --git a/spec/models/form/sales/questions/person1_age_known_spec.rb b/spec/models/form/sales/questions/person1_age_known_spec.rb
deleted file mode 100644
index 98dd81056..000000000
--- a/spec/models/form/sales/questions/person1_age_known_spec.rb
+++ /dev/null
@@ -1,69 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Questions::Person1AgeKnown, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
-
-  let(:question_id) { nil }
-  let(:question_definition) { nil }
-  let(:page) { instance_double(Form::Page) }
-
-  it "has correct page" do
-    expect(question.page).to eq(page)
-  end
-
-  it "has the correct id" do
-    expect(question.id).to eq("age3_known")
-  end
-
-  it "has the correct header" do
-    expect(question.header).to eq("Do you know person 1’s age?")
-  end
-
-  it "has the correct check_answer_label" do
-    expect(question.check_answer_label).to eq("Person 1’s age known?")
-  end
-
-  it "has the correct type" do
-    expect(question.type).to eq("radio")
-  end
-
-  it "is not marked as derived" do
-    expect(question.derived?).to be false
-  end
-
-  it "has the correct answer_options" do
-    expect(question.answer_options).to eq({
-      "0" => { "value" => "Yes" },
-      "1" => { "value" => "No" },
-    })
-  end
-
-  it "has correct conditional for" do
-    expect(question.conditional_for).to eq({
-      "age3" => [0],
-    })
-  end
-
-  it "has the correct hint" do
-    expect(question.hint_text).to eq("")
-  end
-
-  it "has the correct hidden_in_check_answers" do
-    expect(question.hidden_in_check_answers).to eq(
-      {
-        "depends_on" => [
-          {
-            "age3_known" => 0,
-          },
-          {
-            "age3_known" => 1,
-          },
-        ],
-      },
-    )
-  end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(3)
-  end
-end
diff --git a/spec/models/form/sales/questions/person1_age_spec.rb b/spec/models/form/sales/questions/person1_age_spec.rb
deleted file mode 100644
index b904fd75f..000000000
--- a/spec/models/form/sales/questions/person1_age_spec.rb
+++ /dev/null
@@ -1,52 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Questions::Person1Age, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
-
-  let(:question_id) { nil }
-  let(:question_definition) { nil }
-  let(:page) { instance_double(Form::Page) }
-
-  it "has correct page" do
-    expect(question.page).to eq(page)
-  end
-
-  it "has the correct id" do
-    expect(question.id).to eq("age3")
-  end
-
-  it "has the correct header" do
-    expect(question.header).to eq("Age")
-  end
-
-  it "has the correct check_answer_label" do
-    expect(question.check_answer_label).to eq("Person 1’s age")
-  end
-
-  it "has the correct type" do
-    expect(question.type).to eq("numeric")
-  end
-
-  it "is not marked as derived" do
-    expect(question.derived?).to be false
-  end
-
-  it "has the correct hint" do
-    expect(question.hint_text).to be_nil
-  end
-
-  it "has the correct width" do
-    expect(question.width).to eq(3)
-  end
-
-  it "has the correct inferred check answers value" do
-    expect(question.inferred_check_answers_value).to eq({
-      "condition" => { "age3_known" => 1 },
-      "value" => "Not known",
-    })
-  end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(3)
-  end
-end
diff --git a/spec/models/form/sales/questions/person2_age_known_spec.rb b/spec/models/form/sales/questions/person2_age_known_spec.rb
deleted file mode 100644
index 203ea0ecc..000000000
--- a/spec/models/form/sales/questions/person2_age_known_spec.rb
+++ /dev/null
@@ -1,62 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Questions::Person2AgeKnown, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
-
-  let(:question_id) { nil }
-  let(:question_definition) { nil }
-  let(:page) { instance_double(Form::Page) }
-
-  it "has correct page" do
-    expect(question.page).to eq(page)
-  end
-
-  it "has the correct id" do
-    expect(question.id).to eq("age4_known")
-  end
-
-  it "has the correct header" do
-    expect(question.header).to eq("Do you know person 2’s age?")
-  end
-
-  it "has the correct check_answer_label" do
-    expect(question.check_answer_label).to eq("Person 2’s age known?")
-  end
-
-  it "has the correct type" do
-    expect(question.type).to eq("radio")
-  end
-
-  it "is not marked as derived" do
-    expect(question.derived?).to be false
-  end
-
-  it "has the correct answer_options" do
-    expect(question.answer_options).to eq({
-      "0" => { "value" => "Yes" },
-      "1" => { "value" => "No" },
-    })
-  end
-
-  it "has correct conditional for" do
-    expect(question.conditional_for).to eq({
-      "age4" => [0],
-    })
-  end
-
-  it "has the correct hint" do
-    expect(question.hint_text).to eq("")
-  end
-
-  it "has the correct hidden_in_check_answers" do
-    expect(question.hidden_in_check_answers).to eq(
-      {
-        "depends_on" => [{ "age4_known" => 0 }, { "age4_known" => 1 }],
-      },
-    )
-  end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(4)
-  end
-end
diff --git a/spec/models/form/sales/questions/person2_age_spec.rb b/spec/models/form/sales/questions/person2_age_spec.rb
deleted file mode 100644
index 2dba0d695..000000000
--- a/spec/models/form/sales/questions/person2_age_spec.rb
+++ /dev/null
@@ -1,52 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Questions::Person2Age, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
-
-  let(:question_id) { nil }
-  let(:question_definition) { nil }
-  let(:page) { instance_double(Form::Page) }
-
-  it "has correct page" do
-    expect(question.page).to eq(page)
-  end
-
-  it "has the correct id" do
-    expect(question.id).to eq("age4")
-  end
-
-  it "has the correct header" do
-    expect(question.header).to eq("Age")
-  end
-
-  it "has the correct check_answer_label" do
-    expect(question.check_answer_label).to eq("Person 2’s age")
-  end
-
-  it "has the correct type" do
-    expect(question.type).to eq("numeric")
-  end
-
-  it "is not marked as derived" do
-    expect(question.derived?).to be false
-  end
-
-  it "has the correct hint" do
-    expect(question.hint_text).to be_nil
-  end
-
-  it "has the correct width" do
-    expect(question.width).to eq(3)
-  end
-
-  it "has the correct inferred check answers value" do
-    expect(question.inferred_check_answers_value).to eq({
-      "condition" => { "age4_known" => 1 },
-      "value" => "Not known",
-    })
-  end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(4)
-  end
-end
diff --git a/spec/models/form/sales/questions/person3_age_known_spec.rb b/spec/models/form/sales/questions/person3_age_known_spec.rb
deleted file mode 100644
index 8f6e4f022..000000000
--- a/spec/models/form/sales/questions/person3_age_known_spec.rb
+++ /dev/null
@@ -1,62 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Questions::Person3AgeKnown, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
-
-  let(:question_id) { nil }
-  let(:question_definition) { nil }
-  let(:page) { instance_double(Form::Page) }
-
-  it "has correct page" do
-    expect(question.page).to eq(page)
-  end
-
-  it "has the correct id" do
-    expect(question.id).to eq("age5_known")
-  end
-
-  it "has the correct header" do
-    expect(question.header).to eq("Do you know person 3’s age?")
-  end
-
-  it "has the correct check_answer_label" do
-    expect(question.check_answer_label).to eq("Person 3’s age known?")
-  end
-
-  it "has the correct type" do
-    expect(question.type).to eq("radio")
-  end
-
-  it "is not marked as derived" do
-    expect(question.derived?).to be false
-  end
-
-  it "has the correct answer_options" do
-    expect(question.answer_options).to eq({
-      "0" => { "value" => "Yes" },
-      "1" => { "value" => "No" },
-    })
-  end
-
-  it "has correct conditional for" do
-    expect(question.conditional_for).to eq({
-      "age5" => [0],
-    })
-  end
-
-  it "has the correct hint" do
-    expect(question.hint_text).to eq("")
-  end
-
-  it "has the correct hidden_in_check_answers" do
-    expect(question.hidden_in_check_answers).to eq(
-      {
-        "depends_on" => [{ "age5_known" => 0 }, { "age5_known" => 1 }],
-      },
-    )
-  end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(5)
-  end
-end
diff --git a/spec/models/form/sales/questions/person3_age_spec.rb b/spec/models/form/sales/questions/person3_age_spec.rb
deleted file mode 100644
index 50ec25c3f..000000000
--- a/spec/models/form/sales/questions/person3_age_spec.rb
+++ /dev/null
@@ -1,52 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Questions::Person3Age, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
-
-  let(:question_id) { nil }
-  let(:question_definition) { nil }
-  let(:page) { instance_double(Form::Page) }
-
-  it "has correct page" do
-    expect(question.page).to eq(page)
-  end
-
-  it "has the correct id" do
-    expect(question.id).to eq("age5")
-  end
-
-  it "has the correct header" do
-    expect(question.header).to eq("Age")
-  end
-
-  it "has the correct check_answer_label" do
-    expect(question.check_answer_label).to eq("Person 3’s age")
-  end
-
-  it "has the correct type" do
-    expect(question.type).to eq("numeric")
-  end
-
-  it "is not marked as derived" do
-    expect(question.derived?).to be false
-  end
-
-  it "has the correct hint" do
-    expect(question.hint_text).to be_nil
-  end
-
-  it "has the correct width" do
-    expect(question.width).to eq(3)
-  end
-
-  it "has the correct inferred check answers value" do
-    expect(question.inferred_check_answers_value).to eq({
-      "condition" => { "age5_known" => 1 },
-      "value" => "Not known",
-    })
-  end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(5)
-  end
-end
diff --git a/spec/models/form/sales/questions/person4_age_known_spec.rb b/spec/models/form/sales/questions/person4_age_known_spec.rb
deleted file mode 100644
index 559ef62b5..000000000
--- a/spec/models/form/sales/questions/person4_age_known_spec.rb
+++ /dev/null
@@ -1,62 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Questions::Person4AgeKnown, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
-
-  let(:question_id) { nil }
-  let(:question_definition) { nil }
-  let(:page) { instance_double(Form::Page) }
-
-  it "has correct page" do
-    expect(question.page).to eq(page)
-  end
-
-  it "has the correct id" do
-    expect(question.id).to eq("age6_known")
-  end
-
-  it "has the correct header" do
-    expect(question.header).to eq("Do you know person 4’s age?")
-  end
-
-  it "has the correct check_answer_label" do
-    expect(question.check_answer_label).to eq("Person 4’s age known?")
-  end
-
-  it "has the correct type" do
-    expect(question.type).to eq("radio")
-  end
-
-  it "is not marked as derived" do
-    expect(question.derived?).to be false
-  end
-
-  it "has the correct answer_options" do
-    expect(question.answer_options).to eq({
-      "0" => { "value" => "Yes" },
-      "1" => { "value" => "No" },
-    })
-  end
-
-  it "has correct conditional for" do
-    expect(question.conditional_for).to eq({
-      "age6" => [0],
-    })
-  end
-
-  it "has the correct hint" do
-    expect(question.hint_text).to eq("")
-  end
-
-  it "has the correct hidden_in_check_answers" do
-    expect(question.hidden_in_check_answers).to eq(
-      {
-        "depends_on" => [{ "age6_known" => 0 }, { "age6_known" => 1 }],
-      },
-    )
-  end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(6)
-  end
-end
diff --git a/spec/models/form/sales/questions/person4_age_spec.rb b/spec/models/form/sales/questions/person4_age_spec.rb
deleted file mode 100644
index d1c6ebead..000000000
--- a/spec/models/form/sales/questions/person4_age_spec.rb
+++ /dev/null
@@ -1,52 +0,0 @@
-require "rails_helper"
-
-RSpec.describe Form::Sales::Questions::Person4Age, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
-
-  let(:question_id) { nil }
-  let(:question_definition) { nil }
-  let(:page) { instance_double(Form::Page) }
-
-  it "has correct page" do
-    expect(question.page).to eq(page)
-  end
-
-  it "has the correct id" do
-    expect(question.id).to eq("age6")
-  end
-
-  it "has the correct header" do
-    expect(question.header).to eq("Age")
-  end
-
-  it "has the correct check_answer_label" do
-    expect(question.check_answer_label).to eq("Person 4’s age")
-  end
-
-  it "has the correct type" do
-    expect(question.type).to eq("numeric")
-  end
-
-  it "is not marked as derived" do
-    expect(question.derived?).to be false
-  end
-
-  it "has the correct hint" do
-    expect(question.hint_text).to be_nil
-  end
-
-  it "has the correct width" do
-    expect(question.width).to eq(3)
-  end
-
-  it "has the correct inferred check answers value" do
-    expect(question.inferred_check_answers_value).to eq({
-      "condition" => { "age6_known" => 1 },
-      "value" => "Not known",
-    })
-  end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(6)
-  end
-end
diff --git a/spec/models/form/sales/questions/person_age_known_spec.rb b/spec/models/form/sales/questions/person_age_known_spec.rb
new file mode 100644
index 000000000..d7e6e1a2a
--- /dev/null
+++ b/spec/models/form/sales/questions/person_age_known_spec.rb
@@ -0,0 +1,400 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::PersonAgeKnown, type: :model do
+  subject(:question) { described_class.new(question_id, question_definition, page) }
+
+  let(:question_id) { "age3_known" }
+  let(:question_definition) { nil }
+  let(:page) { instance_double(Form::Page) }
+
+  before do
+    allow(page).to receive(:id).and_return("person_1_age")
+  end
+
+  it "has correct page" do
+    expect(question.page).to eq(page)
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("radio")
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+
+  it "has the correct answer_options" do
+    expect(question.answer_options).to eq({
+      "0" => { "value" => "Yes" },
+      "1" => { "value" => "No" },
+    })
+  end
+
+  it "has the correct hint" do
+    expect(question.hint_text).to eq("")
+  end
+
+  context "with a non joint purchase" do
+    context "and person 1" do
+      let(:question_id) { "age2_known" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_1_age")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age2_known")
+      end
+
+      it "has the correct header" do
+        expect(question.header).to eq("Do you know person 1’s age?")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 1’s age known?")
+      end
+
+      it "has correct conditional for" do
+        expect(question.conditional_for).to eq({
+          "age2" => [0],
+        })
+      end
+
+      it "has the correct hidden_in_check_answers" do
+        expect(question.hidden_in_check_answers).to eq(
+          {
+            "depends_on" => [
+              {
+                "age2_known" => 0,
+              },
+              {
+                "age2_known" => 1,
+              },
+            ],
+          },
+        )
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(2)
+      end
+    end
+
+    context "and person 2" do
+      let(:question_id) { "age3_known" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_2_age")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age3_known")
+      end
+
+      it "has the correct header" do
+        expect(question.header).to eq("Do you know person 2’s age?")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 2’s age known?")
+      end
+
+      it "has correct conditional for" do
+        expect(question.conditional_for).to eq({
+          "age3" => [0],
+        })
+      end
+
+      it "has the correct hidden_in_check_answers" do
+        expect(question.hidden_in_check_answers).to eq(
+          {
+            "depends_on" => [
+              {
+                "age3_known" => 0,
+              },
+              {
+                "age3_known" => 1,
+              },
+            ],
+          },
+        )
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(3)
+      end
+    end
+
+    context "and person 3" do
+      let(:question_id) { "age4_known" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_3_age")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age4_known")
+      end
+
+      it "has the correct header" do
+        expect(question.header).to eq("Do you know person 3’s age?")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 3’s age known?")
+      end
+
+      it "has correct conditional for" do
+        expect(question.conditional_for).to eq({
+          "age4" => [0],
+        })
+      end
+
+      it "has the correct hidden_in_check_answers" do
+        expect(question.hidden_in_check_answers).to eq(
+          {
+            "depends_on" => [
+              {
+                "age4_known" => 0,
+              },
+              {
+                "age4_known" => 1,
+              },
+            ],
+          },
+        )
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(4)
+      end
+    end
+
+    context "and person 4" do
+      let(:question_id) { "age5_known" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_4_age")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age5_known")
+      end
+
+      it "has the correct header" do
+        expect(question.header).to eq("Do you know person 4’s age?")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 4’s age known?")
+      end
+
+      it "has correct conditional for" do
+        expect(question.conditional_for).to eq({
+          "age5" => [0],
+        })
+      end
+
+      it "has the correct hidden_in_check_answers" do
+        expect(question.hidden_in_check_answers).to eq(
+          {
+            "depends_on" => [
+              {
+                "age5_known" => 0,
+              },
+              {
+                "age5_known" => 1,
+              },
+            ],
+          },
+        )
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(5)
+      end
+    end
+  end
+
+  context "with a joint purchase" do
+    context "and person 1" do
+      let(:question_id) { "age3_known" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_1_age_joint_purchase")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age3_known")
+      end
+
+      it "has the correct header" do
+        expect(question.header).to eq("Do you know person 1’s age?")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 1’s age known?")
+      end
+
+      it "has correct conditional for" do
+        expect(question.conditional_for).to eq({
+          "age3" => [0],
+        })
+      end
+
+      it "has the correct hidden_in_check_answers" do
+        expect(question.hidden_in_check_answers).to eq(
+          {
+            "depends_on" => [
+              {
+                "age3_known" => 0,
+              },
+              {
+                "age3_known" => 1,
+              },
+            ],
+          },
+        )
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(3)
+      end
+    end
+
+    context "and person 2" do
+      let(:question_id) { "age4_known" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_2_age_joint_purchase")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age4_known")
+      end
+
+      it "has the correct header" do
+        expect(question.header).to eq("Do you know person 2’s age?")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 2’s age known?")
+      end
+
+      it "has correct conditional for" do
+        expect(question.conditional_for).to eq({
+          "age4" => [0],
+        })
+      end
+
+      it "has the correct hidden_in_check_answers" do
+        expect(question.hidden_in_check_answers).to eq(
+          {
+            "depends_on" => [
+              {
+                "age4_known" => 0,
+              },
+              {
+                "age4_known" => 1,
+              },
+            ],
+          },
+        )
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(4)
+      end
+    end
+
+    context "and person 3" do
+      let(:question_id) { "age5_known" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_3_age_joint_purchase")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age5_known")
+      end
+
+      it "has the correct header" do
+        expect(question.header).to eq("Do you know person 3’s age?")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 3’s age known?")
+      end
+
+      it "has correct conditional for" do
+        expect(question.conditional_for).to eq({
+          "age5" => [0],
+        })
+      end
+
+      it "has the correct hidden_in_check_answers" do
+        expect(question.hidden_in_check_answers).to eq(
+          {
+            "depends_on" => [
+              {
+                "age5_known" => 0,
+              },
+              {
+                "age5_known" => 1,
+              },
+            ],
+          },
+        )
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(5)
+      end
+    end
+
+    context "and person 4" do
+      let(:question_id) { "age6_known" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_4_age_joint_purchase")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age6_known")
+      end
+
+      it "has the correct header" do
+        expect(question.header).to eq("Do you know person 4’s age?")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 4’s age known?")
+      end
+
+      it "has correct conditional for" do
+        expect(question.conditional_for).to eq({
+          "age6" => [0],
+        })
+      end
+
+      it "has the correct hidden_in_check_answers" do
+        expect(question.hidden_in_check_answers).to eq(
+          {
+            "depends_on" => [
+              {
+                "age6_known" => 0,
+              },
+              {
+                "age6_known" => 1,
+              },
+            ],
+          },
+        )
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(6)
+      end
+    end
+  end
+end
diff --git a/spec/models/form/sales/questions/person_age_spec.rb b/spec/models/form/sales/questions/person_age_spec.rb
new file mode 100644
index 000000000..3db41e806
--- /dev/null
+++ b/spec/models/form/sales/questions/person_age_spec.rb
@@ -0,0 +1,285 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::PersonAge, type: :model do
+  subject(:question) { described_class.new(question_id, question_definition, page) }
+
+  let(:question_id) { "age3" }
+  let(:question_definition) { nil }
+  let(:page) { instance_double(Form::Page) }
+
+  before do
+    allow(page).to receive(:id).and_return("person_1_age")
+  end
+
+  it "has correct page" do
+    expect(question.page).to eq(page)
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq("Age")
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("numeric")
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+
+  it "has the correct hint" do
+    expect(question.hint_text).to be_nil
+  end
+
+  context "with not a joint purchase" do
+    context "and person 1" do
+      let(:question_id) { "age2" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_1_age")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age2")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 1’s age")
+      end
+
+      it "has the correct width" do
+        expect(question.width).to eq(3)
+      end
+
+      it "has the correct inferred check answers value" do
+        expect(question.inferred_check_answers_value).to eq({
+          "condition" => { "age2_known" => 1 },
+          "value" => "Not known",
+        })
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(2)
+      end
+    end
+
+    context "and person 2" do
+      let(:question_id) { "age3" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_2_age")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age3")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 2’s age")
+      end
+
+      it "has the correct width" do
+        expect(question.width).to eq(3)
+      end
+
+      it "has the correct inferred check answers value" do
+        expect(question.inferred_check_answers_value).to eq({
+          "condition" => { "age3_known" => 1 },
+          "value" => "Not known",
+        })
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(3)
+      end
+    end
+
+    context "and person 3" do
+      let(:question_id) { "age4" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_3_age")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age4")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 3’s age")
+      end
+
+      it "has the correct width" do
+        expect(question.width).to eq(3)
+      end
+
+      it "has the correct inferred check answers value" do
+        expect(question.inferred_check_answers_value).to eq({
+          "condition" => { "age4_known" => 1 },
+          "value" => "Not known",
+        })
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(4)
+      end
+    end
+
+    context "and person 4" do
+      let(:question_id) { "age5" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_4_age")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age5")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 4’s age")
+      end
+
+      it "has the correct width" do
+        expect(question.width).to eq(3)
+      end
+
+      it "has the correct inferred check answers value" do
+        expect(question.inferred_check_answers_value).to eq({
+          "condition" => { "age5_known" => 1 },
+          "value" => "Not known",
+        })
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(5)
+      end
+    end
+  end
+
+  context "with a joint purchase" do
+    context "and person 1" do
+      let(:question_id) { "age3" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_1_age_joint_purchase")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age3")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 1’s age")
+      end
+
+      it "has the correct width" do
+        expect(question.width).to eq(3)
+      end
+
+      it "has the correct inferred check answers value" do
+        expect(question.inferred_check_answers_value).to eq({
+          "condition" => { "age3_known" => 1 },
+          "value" => "Not known",
+        })
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(3)
+      end
+    end
+
+    context "and person 2" do
+      let(:question_id) { "age4" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_2_age_joint_purchase")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age4")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 2’s age")
+      end
+
+      it "has the correct width" do
+        expect(question.width).to eq(3)
+      end
+
+      it "has the correct inferred check answers value" do
+        expect(question.inferred_check_answers_value).to eq({
+          "condition" => { "age4_known" => 1 },
+          "value" => "Not known",
+        })
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(4)
+      end
+    end
+
+    context "and person 3" do
+      let(:question_id) { "age5" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_3_age_joint_purchase")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age5")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 3’s age")
+      end
+
+      it "has the correct width" do
+        expect(question.width).to eq(3)
+      end
+
+      it "has the correct inferred check answers value" do
+        expect(question.inferred_check_answers_value).to eq({
+          "condition" => { "age5_known" => 1 },
+          "value" => "Not known",
+        })
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(5)
+      end
+    end
+
+    context "and person 4" do
+      let(:question_id) { "age6" }
+
+      before do
+        allow(page).to receive(:id).and_return("person_4_age_joint_purchase")
+      end
+
+      it "has the correct id" do
+        expect(question.id).to eq("age6")
+      end
+
+      it "has the correct check_answer_label" do
+        expect(question.check_answer_label).to eq("Person 4’s age")
+      end
+
+      it "has the correct width" do
+        expect(question.width).to eq(3)
+      end
+
+      it "has the correct inferred check answers value" do
+        expect(question.inferred_check_answers_value).to eq({
+          "condition" => { "age6_known" => 1 },
+          "value" => "Not known",
+        })
+      end
+
+      it "has the correct check_answers_card_number" do
+        expect(question.check_answers_card_number).to eq(6)
+      end
+    end
+  end
+end
diff --git a/spec/models/form/sales/subsections/household_characteristics_spec.rb b/spec/models/form/sales/subsections/household_characteristics_spec.rb
index 1d0bdbbcb..3fbf55d5b 100644
--- a/spec/models/form/sales/subsections/household_characteristics_spec.rb
+++ b/spec/models/form/sales/subsections/household_characteristics_spec.rb
@@ -36,20 +36,24 @@ RSpec.describe Form::Sales::Subsections::HouseholdCharacteristics, type: :model
         number_of_others_in_property
         person_1_known
         person_1_age
+        person_1_age_joint_purchase
         person_1_gender_identity
         person_1_gender_identity_joint_purchase
         person_1_working_situation
         person_1_working_situation_joint_purchase
         person_2_known
         person_2_age
+        person_2_age_joint_purchase
         person_2_working_situation
         person_2_working_situation_joint_purchase
         person_3_known
         person_3_age
+        person_3_age_joint_purchase
         person_3_working_situation
         person_3_working_situation_joint_purchase
         person_4_known
         person_4_age
+        person_4_age_joint_purchase
         person_4_working_situation
         person_4_working_situation_joint_purchase
       ],
diff --git a/spec/models/form_handler_spec.rb b/spec/models/form_handler_spec.rb
index 0e3ba2505..380fcd31f 100644
--- a/spec/models/form_handler_spec.rb
+++ b/spec/models/form_handler_spec.rb
@@ -52,14 +52,14 @@ RSpec.describe FormHandler do
     it "is able to load a current sales form" do
       form = form_handler.get_form("current_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(64)
+      expect(form.pages.count).to eq(68)
       expect(form.name).to eq("2022_2023_sales")
     end
 
     it "is able to load a previous sales form" do
       form = form_handler.get_form("previous_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(64)
+      expect(form.pages.count).to eq(68)
       expect(form.name).to eq("2021_2022_sales")
     end
   end