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3 pumps, working 8 hours a day, can empty a tank in 2 days. How........... must 4 pumps work to empty the tank in 1 day?

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3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

posted Dec 17, 2015 by Simranjeet Singh

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1 Answer

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Best answer

12 hours!
Pumping hours required = 3*8*2 = 48 pumping hours
Hours/day required by 4 pumps = 48/4 = 12

answer Dec 17, 2015 by anonymous



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