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A car wash centre washes 10 cars in half an hour. At this rate how many cars can it wash in 4 hours?

A car wash centre washes 10 cars in half an hour. At this rate how many cars can it wash in 4 hours? Correct Answer 80

In half an hour, it can wash = 10 carsin 1 hour,            it can was = 10*2 carsin 4 hours,         it can wash = 10*2*4 = 80 cars (Ans.)

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