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      Question

      150 litres of solution 'C' has milk and water in the ratio

      3:2, and 350 litres of solution 'D' has them in the ratio 7:3. Find the final ratio of milk to water when both are combined.
      A 45:47 Correct Answer Incorrect Answer
      B 67:33 Correct Answer Incorrect Answer
      C 66:71 Correct Answer Incorrect Answer
      D 43:57 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Quantity of milk in solution 'C' = 150 × (3/5) = 90 litres

      Quantity of water in solution 'C' = 150 - 90 = 60 litres

      Quantity of milk in solution 'D' = 350 × (7/10) = 245 litres

      Quantity of water in solution 'D' = 350 - 245 = 105 litres

      Therefore, required ratio = (90 + 245) : (60 + 105) = 335 : 165 = 67 : 33

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