📢 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’ takes 25 minutes to fill a tank. Pipe ‘B’ takes 30 minutes to empty the same tank. If pipe ‘B’ is opened 18 minutes after pipe ‘A’, then find the total time taken to fill the tank in this manner.

      A 65 minutes Correct Answer Incorrect Answer
      B 67 minutes Correct Answer Incorrect Answer
      C 69 minutes Correct Answer Incorrect Answer
      D 60 minutes Correct Answer Incorrect Answer

      Solution

      Let the capacity of the tank be ‘150’ litres {LCM (25, 30)} Efficiency of pipe ‘A’ = (150/25) = 6 litres/minute Efficiency of pipe ‘B’ = (150/30) = 5 litres/minute Quantity of water filled by pipe ‘A’ in 18 minutes = 18 × 6 = 108 litres Quantity of water to be filled = 150 – 108 = 42 litres Time taken by pipe ‘A’ and ‘B’ together to fill 42 litres of water = {42/(6 – 1)} = 42 minutes Total time taken = 18 + 42 = 60 minutes

      Practice Next
      More ESIC Part B Questions

      Relevant for Exams:

      ask-question