conversations.from: human
conversations.value: This math problem has got me stumped: Tony goes on 5 rollercoasters while he is at the park. The first went 50 miles per hour. The second went 62 miles per hour. The third when 73 miles per hour. The fourth when 70 miles per hour. His average speed during the day was 59 miles per hour. How fast was the fifth coaster?
  Can you show me the way?
conversations.from: assistant
conversations.value: The total speed of all five coasters is 295 because 59 x 5 = 295
  The final coaster went 40 miles per hour because 295 - 50 - 62 - 73 - 70 = 40