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      Question

      A vessel contains 80 litres of milk and water in the

      ratio 3 : 1. If 20 litres of mixture is removed and replaced by pure water, then what will be the new quantity of milk in the vessel?
      A 25 liters Correct Answer Incorrect Answer
      B 45 liters Correct Answer Incorrect Answer
      C 32 liters Correct Answer Incorrect Answer
      D 67 liters Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Initial milk = (3/4) x 80 = 60 litres Initial water = (1/4) x 80 = 20 litres 20 litres removed from mixture: Milk removed = (3/4) x 20 = 15 litres Water removed = (1/4) x 20 = 5 litres Milk left = 60 - 15 = 45 litres Then 20 litres pure water added, so milk remains 45 litres

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