conversations.from: human
conversations.value: Solve the following math problem: Rob planned on spending three hours reading in preparation for his literature exam. If he ends up spending only three-quarters of this time reading, and he reads a page every fifteen minutes, how many pages did he read in this time?
conversations.from: assistant
conversations.value: 1 hour is 60 minutes so 3 hours is 3*60 = 180 minutes
  Three-quarters of 180 minutes is (3/4)*180 = 135 minutes
  He spends 15 minutes on 1 page so he will spend 135 minutes on 135/15 = 9 pages