conversations.from: human
conversations.value: Eric decides to go to the park. He runs for 20 minutes, then jogs for 10 minutes to reach the park. When he returns, he takes a different route home and this takes him 3 times as long as his trip there. How long does it take Eric to return home?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: Eric’s trip to the park took 20 minutes running + 10 minutes jogging = 30 minutes.
  So his return trip took 30 minutes * 3 = 90 minutes.