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Mathematics, 20.04.2020 22:45 chloeboo

Pump 1 can empty a pool in 5 hours while Pump 2 can empty the same pool in 9 hours. If the two pumps were to work
together, how long would it take them to empty the pool?

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Pump 1 can empty a pool in 5 hours while Pump 2 can empty the same pool in 9 hours. If the two pumps...

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