📢 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 ‘X’ and pipe ‘Y’ together can fill an empty

      tank in 24 hours while pipe ‘Y’ and pipe ‘Z’ together take 15 hours to fill the same tank. If the efficiency of pipe ‘Z’ is twice that of pipe ‘X’, then find the time taken by pipe ‘Y’ to fill the tank alone.
      A 60 hrs Correct Answer Incorrect Answer
      B 35 hrs Correct Answer Incorrect Answer
      C 75 hrs Correct Answer Incorrect Answer
      D 45 hrs Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ, Let the total capacity of the tank = 120 units Efficiency of pipes (X + Y) = 120/24 = 5 units/hour Efficiency of pipes (Y + Z) = 120/15 = 8 units/hour Let the efficiency of pipe ‘X’ = x units/hour Therefore, efficiency of pipe ‘Z’ = 2x units/hour Therefore, 2x – x = 8 – 5 Or, x = 3 Therefore, efficiency of pipe ‘Y’ = 5 – 3 = 2 units/hour Time taken by pipe ‘Y’ to fill the tank alone = 120/2 = 60 hours

      Practice Next
      More Pipes and cisterns Questions

      Relevant for Exams:

      ask-question