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Pipes and Cisterns Practice Test 3 with solutions

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Question : 4

Total: 7

A tank can be filled separately by two taps A and B in 45 minutes and 36 minutes respectively. A tap C at the bottom can empty the full cistern in 30 minutes. If the tap C is opened 7 minutes after the two taps A and B are opened, find when the cistern will be full?

46 minutes
25 minutes
14 minutes
None of these

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