Mathematics, 18.02.2021 22:50 puppylove899
an inlet pipe on a swimming pool can be used to fill the pool in 47 hours. The drain pipe can be used to empty the pool in 48 hourd. If the pool is 1/2 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 47 hours. The drain pipe can be use...
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