📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

  • google app store apple app store
  • ✖

      Question

      A and B fill a tank in 6 and 8 hours. Pipe C empties it

      in ‘x’ hours. All three open together fill the tank in 4 hours. Find x.
      A 18 hours Correct Answer Incorrect Answer
      B 20 hours Correct Answer Incorrect Answer
      C 22 hours Correct Answer Incorrect Answer
      D 24 hours Correct Answer Incorrect Answer

      Solution

      Let the capacity of the tank = 24 liters (LCM of 6, 8, and 4)
      Amount of water filled by pipe A in one hour = 24 ÷ 6 = 4 liters
      Amount of water filled by pipe B in one hour = 24 ÷ 8 = 3 liters
      Amount of water filled by pipes A, B and C together in one hour = 24 ÷ 4 = 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 = 24 ÷ 1 = 24 hours

      Practice Next

      Relevant for Exams:

      ask-question