conversations.from: human
conversations.value: Mike began to train to play basketball every day for a tournament. One day he plays a maximum of 2 hours. After a week of training, he increased the maximum time to 3 hours. How many hours did Mike train during the first two weeks?
  Work out the solution step by step.
conversations.from: assistant
conversations.value: One week is 7 days, so for one week, Mike trained for 7 * 2 = 14 hours.
  The second week he began to train for 3 hours a day, so he trained for 7 * 3 = 21 hours.
  That means Mike in total trained for 21 + 14 = 35 hours.