conversations.from: human
conversations.value: I need a clearer understanding of how to solve: There is a lot of dust in Susie's house. It takes her 2 hours to vacuum the whole house. She can vacuum each room in 20 minutes. How many rooms does she have in her house?
conversations.from: assistant
conversations.value: Susie spends 2*60 = 120 minutes vacuuming.
  Since she can vacuum each room in 20 minutes, she has 120/20 = 6 rooms in her house.