conversations.from: human
conversations.value: Solve the following math problem: As Dan is learning to screen-print t-shirts to sell at the craft fair, he makes t-shirts, over the first hour, at the rate of one every 12 minutes. Then, in the second hour, he makes one at the rate of every 6 minutes. How many t-shirts does he make over the course of those two hours?
conversations.from: assistant
conversations.value: He made 60/12=5 the first hour.
  He made 60/6=10 the second hour.
  He made 5+10=15