Posted by Suzi on September 16, 2002 at 23:05:47:
Need help with son's homework. On a recent 6 hour bike trip of 70 miles, Lila spent 2 hours on the first part of the trip where her average speed was half of her average speed on the second part. What was her speed on the first part. The answer is 7 miles/hour. We must show how to solve the problem. Thanks.