A car-wash can wash 8 cars in 18 minutes. At this rate, how many cars can the car-wash in 3 hours ?
A
13
B
40.5
C
80
D
125
Correct Answer: 80
3 hour=(3×60)=180 minute18 min wash 8 car1 min wash 8\18 car180 Min wash 8*180/18= 80 car