conversations.from: human
conversations.value: Can you break down the solution for me for this math problem: Mary and Ann are going sledding. Mary slides down a hill that's 630 feet long at a speed of 90 feet/minute. Ann slides down a hill that's 800 feet long at a rate of 40 feet/minute. How much longer does Ann's trip take than Mary?
conversations.from: assistant
conversations.value: First find the total time Mary's trip takes: 630 feet / 90 feet/minute = 7 minutes
  Then find the total time Ann's trip takes: 800 feet / 40 feet/minute = 20 minutes
  Then subtract Mary's time from Ann's time to find the difference: 20 minutes - 7 minutes = 13 minutes