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

      Question

      Pipes A and B can fill a tank in 12 hours and 16 hours

      respectively, while pipe C can empty the full tank in ‘x’ hours. If all three pipes are opened together, the tank gets filled in 8 hours. Find the value of ‘x’.
      A 24 hours Correct Answer Incorrect Answer
      B 32 hours Correct Answer Incorrect Answer
      C 40 hours Correct Answer Incorrect Answer
      D 48 hours Correct Answer Incorrect Answer

      Solution

      Let the capacity of the tank = 48 liters (LCM of 12, 16, and 8)
      Amount of water filled by pipe A in one hour = 48 ÷ 12 = 4 liters
      Amount of water filled by pipe B in one hour = 48 ÷ 16 = 3 liters
      Amount of water filled by pipes A, B and C together in one hour = 48 ÷ 8 = 6 liters
      Amount of water taken by pipe C alone in one hour = 4 + 3 – 6 = 1 liter
      Time taken by pipe C alone to empty the tank = 48 ÷ 1 = 48 hours

      Practice Next
      More Pipes and cisterns Questions
      ask-question