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

      Question

      An inlet pipe can fill a tank in 15 minutes when

      there’s no leakage. However, due to a leak in the tank, it takes 21 minutes to fill it completely. How long would the leak alone take to empty the full tank?
      A 45 min Correct Answer Incorrect Answer
      B 52.5 min Correct Answer Incorrect Answer
      C 57.5 min Correct Answer Incorrect Answer
      D 60 min Correct Answer Incorrect Answer

      Solution

      Let the capacity of the tank = L.C.M and 15 and 21 = 105 units
      Then, efficiency of the inlet pipe = 105 ÷ 15 = 7 units/minute
      Combined efficiency of the inlet pipe with the leak = 105 ÷ 21 = 5 units/minute
      So, efficiency of the leak = 5 - 7 = 2 units/minute (outlet)
      So, time taken by the leak to empty the entire tank = 105 ÷ 2 = 52.5 minutes

      Practice Next
      More Time and work Questions

      Relevant for Exams:

      ask-question