conversations.from: human
conversations.value: Richard can clean his room in 22 minutes. Cory takes 3 minutes more than Richard to clean her room while Blake can clean his room 4 minutes more quickly than Cory. If they have to clean their rooms twice a week, how many minutes do all three spend cleaning their rooms each week?
conversations.from: assistant
conversations.value: Cory takes 22 + 3 = 25 minutes to clean her room.
  Blake takes 25 - 4 = 21 minutes to clean his room.
  The three of them can clean their room in 22 + 25 + 21 = 68 minutes in all.
  In a week, they spend 68 x 2 = 136 minutes cleaning their rooms.