Answer:
Matthews average speed was 62 miles per hour.
Step-by-step explanation:
We know that Matthew drove 15 1/2 miles in 1/4 of an hour. We want to know how many miles Matthew drove every hour. To solve this problem, multiply 15 1/2 by 4.
15 1/2 x 4 = 62
Therefore, Matthews average speed was 62 miles per hour.
Hope this helps! :D
