conversations.from: human
conversations.value: I need help with this problem:
  Bob runs 6 miles per hour. His friend Jim runs at 9 miles per hour. If Bob has a 1 mile head-start, how many minutes will it take before Jim catches him?
conversations.from: assistant
conversations.value: Bob runs .1 miles per minute because 6 / 60 = .1
  Jim run at .15 miles per minute 9 / 60 = .15
  We know that .1(Number of Minutes) + 1 = .15(Number of Minutes)
  Therefore 1 = .05(Number of minutes)
  Therefore (Number of minutes) = 20 because 1 / .05 = 20