Question

She runs for 6.4 miles at a speed of 4 miles per hour. For how many hours does she run?

Answer 1

4 miles per hour
6.4 miles ...? hours

6.4 / 4 = 1.6 hours

answer
she runs 1.6 hours for 6.4 miles

Answer 2

To find how fast she ran per hour, divide 6.4 by 4 = 1.6
She runs at a speed of 1.6 mph per hour.
Hope this helps!!