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A water vessel is one – fifth full. Tube X can fill a vessel in 5 minutes and tube Y can empty it in 3 minutes. If both the tubes are open, how long will it take to empty or fill the vessel completely? |
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Answer» A water vessel is one – fifth full. Tube X can fill a vessel in 5 minutes and tube Y can empty it in 3 minutes. If both the tubes are open, how long will it take to empty or fill the vessel completely? |
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