Question

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?

Answer 1

Average speed of Fran should be 14 miles/hour

Step-by-step explanation:

Since distance covered by both are same thus

1) Distance covered by Joann =
`Speed X Time`

Distance = 12mph x 3.5 h

Distance = 42 miles

Now For Fran to cover the same distance in 3 hours his speed should be

`speed=(Distance )/(time)\\ \\speed=(42miles)/(3hours)\\\\speed = 14 miles/hour`