diff --git a/README.md b/README.md
index c6889d2..595771d 100644
--- a/README.md
+++ b/README.md
@@ -50,3 +50,4 @@ The browser extension will also highlight the newly covered lines in `foo_bar.rb
 
 2. Commit to `demo-branch`. You should now see duplication issues reported by Code Climate.    
 
+ 
diff --git a/foo_bar.rb b/foo_bar.rb
index bc32445..168d669 100644
--- a/foo_bar.rb
+++ b/foo_bar.rb
@@ -1 +1,22 @@
-# TODO: Add FooBar content
+class FooBar
+  def run(items = gets.chomp.to_i)
+    if items > 0
+      list = []
+      (1..items).each do |n|
+        if n % 3 == 0 && n % 5 == 0
+          list << "FOOBAR"
+        elsif n % 3 == 0
+          list << "FOO"
+        elsif n % 5 == 0
+          list << "BAR"
+        else
+          list << n
+        end
+      end
+    else
+      puts "Please enter a positive number"
+    end
+
+    list
+  end
+end
diff --git a/spec/foo_bar_spec.rb b/spec/foo_bar_spec.rb
index 7689240..b2b3a0b 100644
--- a/spec/foo_bar_spec.rb
+++ b/spec/foo_bar_spec.rb
@@ -1,4 +1,27 @@
 require "spec_helper"
 require_relative "../foo_bar"
 
-# TODO: Add FooBar specs
+describe "FooBar" do
+  it "returns correct list of items" do
+    result = FooBar.new.run(15)
+
+    expect(result.length).to eq(15)
+    expect(result).to eq([
+      1,
+      2,
+      "FOO",
+      4,
+      "BAR",
+      "FOO",
+      7,
+      8,
+      "FOO",
+      "BAR",
+      11,
+      "FOO",
+      13,
+      14,
+      "FOOBAR",
+    ])
+  end
+end