Area, Surface & Volumehard
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Two pipes A and B fill a tank in 4 hours and 6 hours respectively. A drain pipe C empties it in 12 hours. If all three are open, how long to fill the tank?
Two pipes A and B fill a tank in 4 hours and 6 hours respectively. A drain pipe C empties it in 12 hours. If all three are open, how long to fill the tank?