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Two pipes can fill a tank in 20 minutes and 30 minutes respectively. Both pipes are opened together but after 5 minutes the first is closed. How long will it take to fill the remaining tank?
Two pipes can fill a tank in 20 minutes and 30 minutes respectively. Both pipes are opened together but after 5 minutes the first is closed. How long will it take to fill the remaining tank?
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For pipe problems, always calculate the "fraction of tank filled" per unit of time to handle partial filling scenarios.
Updated On: Mar 27, 2026
- 10 min
- 11.25 min
- 12 min
- 9 min
- 13 min
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The Correct Option is B
Solution and Explanation
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