conversations.from: human
conversations.value: Andy bakes and sells birthday cakes. To make two cakes he spends $12 on ingredients, and $1 on packaging for each cake. Andy sells each cake for $15. How much money does Andy make for each cake?
  Find the solution.
conversations.from: assistant
conversations.value: Spending $12 on ingredients for 2 cakes, he spends 12 / 2 = $6 on ingredients per cake.
  Adding the cost of packaging, he spends 6 + 1 = $7 per cake.
  Selling each cake for $15, Andy's profit is 15 - 7 = $8 per cake.