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Mathematics, 01.12.2021 01:50 ZacharyGallagher

PLEASE HELP! One inlet pipe can fill an empty pool in 8 hours, and a drain can empty the pool in 20 hours. How long will it take the pipe to fill the pool if the drain is left open?
hours:

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PLEASE HELP! One inlet pipe can fill an empty pool in 8 hours, and a drain can empty the pool in 2...
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