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Pipes and Cisterns Practice Test 3 with solutions

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Question : 2

Total: 7

A tank is connected with two pipes P and Q. P can fill the tank in 3 minutes and Q can empty it in 4 minutes. If both the pipes are opened for two minutes and then Pipe P was alone opened for 2 minutes, then what fraction of tank will remain empty after 4 minutes?

7
12
5
6
1
12
1
6
None of the above

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