a car washer can wash 8 cars in 18 minutes. at this rate how many cars can he wash, in three hours?
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The washer can wash 8 cars in 18 minutes or in 18/60 hours
So number of cars washed in 1 hr is 8/(18/60)
=8*60/18=80/3 cars
So total number of cars washed in 3 hrs is 80/3*3=80 cars
So number of cars washed in 1 hr is 8/(18/60)
=8*60/18=80/3 cars
So total number of cars washed in 3 hrs is 80/3*3=80 cars
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