Question

Kelly walked 1/4 miles in 1/10 hour. What is her average speed in miles per hour?

Answer 1

You know how many miles Kelly walked in 1/10 hour. To find the speed in miles per hour you have to find how much she'll walk in 1 hour:

`s=((1)/(4)mi)/((1)/(10)h)=(5)/(2)(mi)/(h)=2.5mi/h`

The average speed is 2.5 mi/h