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Practice Pipes And Cisterns multiple-choice questions from General Aptitude. Choose an answer and review the result and available explanations.
A tank has 3 pipes. Pipe A fills the tank in 6 hours, pipe B fills in 8 hours, and pipe C empties in 12 hours. If A and C are opened for 2 hours, then A is closed and B and C work together, how long will it take from the beginning to fill the tank completely?