conversations.from: human
conversations.value: Jennie drives to her son’s house in 5 hours when there is heavy traffic. When there is no traffic the same trip takes only 4 hours. If her son's house is 200 miles away, what is the difference between her average speed when there is heavy traffic and when there is no traffic?
conversations.from: assistant
conversations.value: Jennie can cover the 200-mile distance in 5 hours when there is heavy traffic, so her average speed is 200/5 = 40mph
  She can cover the same distance in 4 hours when there is no traffic for an average speed of 200/4 = 50mph
  The difference in average speed between the two scenarios is (50-40)mph = 10mph