Question

Joe and Kim washed 27 cars in 6 hours. The next day, they had more help and washed twice as many cars in the same amount of time. What was their average car-washing rate on the second day?

A. 4.5 cars per hour
B. 5 cars per hour
C. 6.2 cars per hour
D. 9 cars per hour

Answer 1

The answer is D) 9 Cars per hour

Explanation:

Trust me:)

Answer 2

The answer is D 9 cars per hour

Work:
27*2=54 (they washed twice as many cars.)
54/6 = 9 (They did it in the same amount of time but you have to know the rate so you divide by 6.)