conversations.from: human
conversations.value: I'm stuck on this math problem: Carlo has a music recital next week. He practiced twice as long on Monday as on Tuesday. On Tuesday, he practiced 10 minutes less than on Wednesday. On Wednesday, he practiced 5 minutes more than on Thursday. On Thursday, he practiced for 50 minutes. If he needs to practice for a total of 5 hours that week, how long should Carlo practice on Friday?
  Can you help?
conversations.from: assistant
conversations.value: On Wednesday, Carlo practiced for 50 + 5 = 55 minutes.
  On Tuesday, he practiced for 55 - 10 = 45 minutes.
  On Monday, he practiced for 45 x 2 = 90 minutes.
  So, Carlo practiced for a total of 90 + 45 + 55 + 50 = 240 minutes from Monday to Thursday.
  He needs to practice for a total of 60 x 5 = 300 minutes.
  Therefore, he should practice for 300 - 240 = 60 minutes on Friday.