Pipe A fills a tank in 2 hours. Pipe B fills the tank in 3 hours. If both Pipes are opened at the same time, how long will it take to fill the tank.
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Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in: A. 412 4 1 2 hours, B.
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3 Hours is your correct answer
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