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      Question

      A container contains 120 lit of pure milk and P liters

      of water. Ratio of 25% of mixture to the initial quantity of water is 3 : 4 and when Q liters of water is added to it ratio of total mixture to water becomes 9 : 4. Then find the value of P + Q.
      A 96 Correct Answer Incorrect Answer
      B 90 Correct Answer Incorrect Answer
      C 95 Correct Answer Incorrect Answer
      D 93 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      (120 + P)/4P = 3/4
      120 + P = 3P
      P = 60 liters
      And, (120 + Q)/(180 + Q) = 4/9
      540 + 9Q = 720 + 4Q
      5Q = 180
      Q = 36 liters
      Required sum = 96 liters

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