conversations.from: human
conversations.value: Joe sells cookies for 20% more than it costs to make them. If he sold 50 cookies and earned $60, how much do the cookies cost to make?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: He sold the cookies for $1.20 each because 60 / 50 = 1.2
  They cost $1 to make because 1.2 / 1.2 = 1