Joann rode her bike at an average speed of 12 miles per hour for three and a half hours. If her friend, Fran, rides for 3 hours, at what average speed, in miles per hour, would she have to ride her bike to travel the same distance that Joann traveled?
So, Joann traveled 12 times 3.5 miles, which is 42 miles. Fran needs to travel the same distance in 3 hours, so I need to divide the distance by the time to find her average speed. So, Fran's average speed is 42 divided by 3 miles per hour, which is 14 miles per hour. 