Question

Molly road her bike 15 3/4 miles in 3/4 of an hour.what was his average speed in miles per hour?

Answer 1

21 miles per hour

Explanation:

15 3/4=63/4

(63/4)/(3/4)=x/1

cross product

(3/4)x=(63/4)(1)

3/4x=63/4

x=(63/4)/(3/4)

x=(63/4)(4/3)

x=63/3

x=21