conversations.from: human
conversations.value: Solve the math problem: Joan wants to visit her family who live 480 miles away.  If she drives at a rate of 60 mph and takes a lunch break taking 30 minutes, and 2 bathroom breaks taking 15 minutes each, how many hours did it take her to get there?
conversations.from: assistant
conversations.value: The driving time is 480/60= 8 hours
  The time for breaks was 30+15+15=60 minutes
  So she spent 60/60=1 hour for rest stops.
  So it took her 8+1=9 hours