conversations.from: human
conversations.value: I need a clearer understanding of how to solve: Micah, Dean, and Jake are all training for a marathon organized by a local NGO to support children in their town who have cancer. Micah runs 2/3 times as fast as Dean. It takes Jake 1/3 times more time to finish the marathon than it takes Mica. If Dean takes 9 hours, what's the total time the three take to complete the marathon?
conversations.from: assistant
conversations.value: If Dean takes 9 hours to finish the marathon, it takes Micah 2/3 * 9 hours = 6 hours to finish the marathon.
  It takes Jake 1/3 * 6 hours = 2 more hours to finish the marathon than Micah.
  Jake takes a total of 6 hours + 2 hours = 8 hours to finish the marathon.
  Micah, Dean, and Jake take a total of 8 hours + 6 hours + 9 hours = 23 hours to finish the marathon.