conversations.from: human
conversations.value: Jim has a pail with rocks in it. The average weight of a rock is 1.5 pounds. A local rock collector agrees to pay him $4 for every pound of rocks. If he makes $60 off the sale, how many rocks were in the bucket?
  Give me a detailed solution.
conversations.from: assistant
conversations.value: There were 15 pounds of rocks in the bucket because 60 / 4 = 15
  There were 10 rocks in the bucket because 15 / 1.5 = 10