Question

Gina drove 36 miles in 3/4 of an hour. The equation 36=3/4 r can be used to find her average rate of speed r in miles per hour. What was Gina’s average rate of speed?

Answer 1

Her average speed is 48 miles per hour.

Explanation:

1. You have to do order of operations in reverse (PEMDAS in reverse)

2. Divide 36 by 3/4 which would be to multiply by the reciprocal (multiplying 36 by 4/3)

3. The answer would then be r=48