Answer:
At the same rate 9 cars can move through the car wash in 24 minutes
Step-by-step 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