πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!
  • google app store apple app store
    • βœ–

      Question

      Pipe β€˜A’ can fill a tank in 25 hours while pipe

      β€˜B’ can empty it in 30 hours. They were operated on alternate hours starting with pipe β€˜A’. Find the percentage of tank filled this way in 60 hours.
      A 22.5% Correct Answer Incorrect Answer
      B 25% Correct Answer Incorrect Answer
      C 15% Correct Answer Incorrect Answer
      D 20% Correct Answer Incorrect Answer

      Solution

      Let the total capacity of tank be 150 units Efficiency of pipe β€˜A’ = 150/25 = 6 units/hour Efficiency of pipe β€˜B’ = 150/30 = 5 units/hour Tank filled in 2 hours = (6 – 5) = 1 units Therefore, tank filled in (2 Γ— 30 = 60 hours) = 1 Γ— 30 = 30 units Required percentage of tank filled = (30/150) Γ— 100 = 20%

      Practice Next
      More Pipes and cisterns Questions

      Relevant for Exams:

      ask-question