conversations.from: human
conversations.value: Explain how to solve this math problem: Mike was a pen pal with 5 people.  He stopped being penpals with 2 of them.  They each send 2 letters a week that are 5 pages long.  He responds in kind.  He can write a page every 6 minutes.  How many hours does he spend writing a week?
conversations.from: assistant
conversations.value: He is penpals with 5-2=3 people
  Thus he gets 3*2=6 letters a week
  So he writes 6*5=30 pages a week
  So he writes for 30*6=180 minutes a week
  So he writes 180/60=3 hours a week