Question

Mr. Sam took 1 hour and 15 minutes to drive home to his office. If the distance between his home and office was 50 miles, at what average speed did Mr. Sam drive?

___ mph.

Answer 1

The answer is 40mph because

Explanation
The rate of speed formula is r=d/t
So I just plug in the numbers into the formula and got my answer.

50miles /1.25hours = 40mph