conversations.from: human
conversations.value: When the water is cold Ray swims a mile in 16 minutes. When the water is warm Ray swims a mile in 2 minutes more than twice as long. How much longer does Ray take to swim 3 miles on a hot day than a cold day?
  Can you solve this problem?
conversations.from: assistant
conversations.value: Cold water mile = 16 minutes
  Warm water mile = 2+2(16)=34 minutes
  3 miles in cold water: 3(16)=48 minutes
  3 miles in warm water: 3(34)=102 minutes
  Ray takes 102-48=54 minutes longer