sign_shop.rb

def sign_order
  puts "How many square feet is your sign?"
  size = gets.chomp.to_i
  subtotal_1 = size * 15
  puts "How many colours would you like?"
  colours = gets.chomp.to_i
  if colours <= 2
    subtotal_2 = colours * 10
  else
    subtotal_2 = colours * 15
  end
  total = subtotal_1 + subtotal_2
  total_with_tax = total * 1.13
  puts "Your total is #{total_with_tax}"
end

sign_order