Mathematics, 23.11.2019 04:31, jaelynnm

At a constant rate of flow, it takes 20 minutes to fill a swimming pool if a large hose is used and 30 minutes if a small hose is used. at these constant rates, how many minutes will it take to fill the pool when both hoses are used simultaneously?

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At a constant rate of flow, it takes 20 minutes to fill a swimming pool if a large hose is used and...