conversations.from: human
conversations.value: I need help with this problem:
  Rosie runs 6 miles per hour. She runs for 1 hour on Monday, 30 minutes on Tuesday, 1 hour on Wednesday, and 20 minutes on Thursday. If she wants to run 20 miles for the week, how many minutes should she run on Friday?
conversations.from: assistant
conversations.value: On Monday and Wednesday, Rosie runs 6*1= 6 miles.
  On Tuesday, Rosie runs 6*(30 minutes/60 minutes) = 3 miles.
  On Thursday, Rosie runs 6*(20 minutes/60 minutes)=2 miles.
  So far this week Rosie has run 6+3+6+2=17 miles.
  To reach her goal, she must run 20-17=3 miles on Friday.
  Thus, she should run for 6/3=.5 hour which is 30 minutes.