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SSC CGL Tier 2 Quant 13 Sep 2019 Paper

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Question : 32

Total: 100

Pipes A and B are filling pipes while pipe C is an emptying pipe. A and B can fill a tank in 72 and 90 minutes respectively. When all the three pipes are opened together, the tank gets filled in 2 hours. A and B are opened together for 12 minutes, then closed and C is opened. The tank will be empty after:

18 minutes
16 minutes
15 minutes
12 minutes

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