Mathematics
Mathematics, 23.11.2020 09:40, xxaurorabluexx

One inlet pipe can fill an empty pool in 9 hours, and a drain can empty the pool in 12 hours. How long will it take the pipe to fill the pool if the drain is left open?

hours

answer
Answers: 3

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One inlet pipe can fill an empty pool in 9 hours, and a drain can empty the pool in 12 hours. How lo...

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