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      Question

      A 48 litres mixture of milk and water contains them in the

      ratio 3:1. After removing 12 litres of the mixture and replacing it with ‘x’ litres of water, the resulting mixture has water to milk ratio of 1:1. What is the value of ‘x’?
      A 18 Correct Answer Incorrect Answer
      B 9 Correct Answer Incorrect Answer
      C 13 Correct Answer Incorrect Answer
      D 15 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Quantity of remaining mixture = 48 – 12 = 36 litres

      Quantity of milk in 36 litres of mixture = 36 × (3/4) = 27 litres

      And, quantity of water in 36 litres = 36 – 27 = 9 litres

      So, quantity of water in resultant mixture = (1/1) × 27 = 27 litres

      Required quantity of water added = 27 – 9 = 18 litres

      So, x = 18

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