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      Question

      Pipe A alone fill the tank in x hours and Pipe B alone

      fill the tank in (x – 10) hours. If the efficiency of pipe B is triple of pipe A and pipe A fill the tank is 40 liters per hour, then what is the capacity of the tank?
      A 675 liters Correct Answer Incorrect Answer
      B 550 liters Correct Answer Incorrect Answer
      C 600 liters Correct Answer Incorrect Answer
      D 525 liters Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Pipe A alone fill 40 liters per hour, so Pipe B alone fill 120 liters per hour. Capacity of the tank = T => T/40 – T/120 = x – (x – 10) => 3T – T = 1200 => T = 600 liters

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