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A car-wash can wash 8 cars in 18 minutes. At this rate, how many cars can the car-wash in 3 hours ?

A car-wash can wash 8 cars in 18 minutes. At this rate, how many cars can the car-wash in 3 hours ? 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 

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