SOLUTION: An inlet pipe on a swimming pool can be used to fill the pool in 21 hours. The drain pipe can be used to empty the pool in 28 hours. If the pool is 12 filled and then the inlet pip
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-> SOLUTION: An inlet pipe on a swimming pool can be used to fill the pool in 21 hours. The drain pipe can be used to empty the pool in 28 hours. If the pool is 12 filled and then the inlet pip
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Question 1054740: An inlet pipe on a swimming pool can be used to fill the pool in 21 hours. The drain pipe can be used to empty the pool in 28 hours. If the pool is 12 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool?
