CBSE Class 12-science Answered
Using a hose it takes 9 hours to fill a swimming pool. Using an irrigation pump it takes 3 hours. If both hose and pump were used together, how long will it take to fill the pool?
Asked by tv2000in | 24 May, 2019, 02:52: PM
Expert Answer
Answered by Arun | 24 May, 2019, 04:10: PM
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