A tank has three pipes: A, B, and C. Pipe A can fill the tank in 10 hours, Pipe B can fill the tank in 15 hours, and Pipe C can empty the tank in 20 hours. If all three ...
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A tank has three pipes: A, B, and C. Pipe A can fill the tank in 10 hours, Pipe B can fill the tank in 15 hours, and Pipe C can empty the tank in 20 hours. If all three ...
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