conversations.from: human
conversations.value: Can you break down the solution for me for this math problem: Kris is trying to earn a video game achievement for playing a total of 30 hours. If Kris plays for half an hour every day for 2 weeks then plays for 2 hours every day for a week, how many hours does she still need to play to earn the achievement?
conversations.from: assistant
conversations.value: Two weeks is the same as 2 weeks * 7 days = 14 days.
  So playing for half an hour every day means Kris will have played for 0.5 hours * 14 days = 7 hours.
  Playing for 2 hours every day for another week will be an additional 2 hours * 7 days = 14 hours.
  She therefore still needs to play 30 – 7 – 14 = 9 hours.