Question

Rebecca friends house is 3 miles away how fast does she have to go to get there in 20 minutes on bike

Answer 1

9mph

Explanation

We know that Rebecca takes 20 min to go 3 miles. We can multiply both by 3 to get the answer. If she goes 3 miles in 20 min, she can go 9 miles in 1 hour, or 9mph.