Mathematics, 25.06.2019 08:30 dmurdock1973

One pump can drain a pool in 12 minutes. when a second pump is also used, the pool only takes 5 minutes to drain. how long would it take the second pump to drain the pool if it were the only pump in use?

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One pump can drain a pool in 12 minutes. when a second pump is also used, the pool only takes 5 minu...

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