📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      Pipe ‘P’ alone can fill a tank in 12 hours. When

      pipe ‘P’ and ‘Q’ are opened together, they can fill 75% of the same tank in 9 hours. Find the time taken by pipe ‘Q’ alone to fill 60% of the same tank.
      A 25 hrs Correct Answer Incorrect Answer
      B 48 hrs Correct Answer Incorrect Answer
      C 22 hrs Correct Answer Incorrect Answer
      D Can’t be determined Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ; Time taken by pipes ‘P’ and ‘Q’ together to fill 100% of the tank = 9 ÷ 0.75 = 12 hours Let the capacity of the tank be 60 litres. {LCM (12 and 12)} Efficiency of pipe ‘P’ = (60/12) = 5 litres/hour Efficiency of pipe ‘P’ and ‘Q’ together = (60/12) = 5 litres/hour Efficiency of pipe ‘Q’ = 5 – 5 = 0 litres/hour Time taken by pipe ‘Q’ to fill 60% of the tank = (60 × 0.6)/0 = Undefined (This scenario is not possible, as pipe ‘Q’ has no efficiency.)

      Practice Next
      More Pipes and cisterns Questions

      Relevant for Exams:

      ask-question