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Mathematics, 17.10.2019 05:00 AM28
An inlet pipe on a swimming pool can be used to fill the pool in 30 hours. the drain pipe can be used to empty the pool in 48 hours. if the pool is 1/5 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool?
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An inlet pipe on a swimming pool can be used to fill the pool in 30 hours. the drain pipe can be use...
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