Mathematics, 22.09.2019 21:10 kaiyerecampbell95

Anew type of pump can drain a certain pool in 6 hours. an older pump can drain the pool in 14 hours. how long will it take both pumps working together to drain the pool?

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Anew type of pump can drain a certain pool in 6 hours. an older pump can drain the pool in 14 hours....

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