Two pipes A and B can fill a tank in 18 and 6 h, respectively. If both the pipes are opened simultaneously, how much time will be taken to fill the tank?

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Accepted Answer

Part filled by A in 1 h = 1/18 Part filled by B in by 1 h = 1/6 Part filled (A + B) in 1 h =1/18 + 1/6 = (1 + 3)/18 = 4/18 = 2/9 Hence, both the pipes together will fill the tank in 9/2 h or 41/2 h

Two pipes A and B can fill a tank in 18 and 6 h, respectively. If both the pipes are opened simultaneously, how much time will be taken to fill the tank?

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