📢 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 'A' is twice as efficient as pipe 'B'. Pipe 'C', which

      is one-third as efficient as pipe 'B', can fill a tank alone in 27 hours. Find difference between time taken by pipe 'C' to fill 33.33% of the tank and time taken (in minutes) by pipe 'A' to fill the tank completely.
      A 270 minutes Correct Answer Incorrect Answer
      B 330 minutes Correct Answer Incorrect Answer
      C 300 minutes Correct Answer Incorrect Answer
      D 240 minutes Correct Answer Incorrect Answer

      Solution

      Let the efficiency of pipe 'C' be 'x' litres/hour.
      So, total capacity of the tank = '27x' litres.

      Efficiency of pipe 'A' = x × 3 × 2 = '6x' litres/hour
      So, time taken by pipe 'A' to fill the tank = 27x / 6x = 4.5 hours

      And, time taken by pipe 'C' to fill 33.33% of the tank = (27x × 1/3) / x = 9 hours

      So, required difference = 9 - 4.5 = 4.5 hours = 4.5 × 60 = 270 minutes

      Practice Next
      More Pipes and cisterns Questions

      Relevant for Exams:

      ask-question