Answer:
At the same rate 9 cars can move through the car wash in 24 minutes
Explanation:
No. of cars washed in 8 minutes = 3
No. of cars washed in 1 minute =

So, rate is 3/8 cars per minute
No. of cars washed in 24 minutes =

=

So, No. of cars washed in 24 minutes is 9
Hence At the same rate 9 cars can move through the car wash in 24 minutes