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Mathematics, 15.01.2020 06:31 itsmichaelhere1

a large pipe can fill a pool in six hours, and a smaller pipe can fill the same
pool in nine hours. a drain, which can empty the pool in twelve hours, is
inadvertently left open while the pool is being filled. how long
would it take the two pipes to fill the pool with the drain open?

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Answers: 2

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a large pipe can fill a pool in six hours, and a smaller pipe can fill the same
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