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      Question

      A container has 80 litres of milk and water in the ratio

      3:1. If 20 litres of the mixture is removed and replaced with 20 litres of water, what will be the new ratio of milk to water?
      A 9:7 Correct Answer Incorrect Answer
      B 5:8 Correct Answer Incorrect Answer
      C 4:9 Correct Answer Incorrect Answer
      D 2:9 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ, Initially: Milk = (3/4)├Ч80 = 60, Water = (1/4)├Ч80 = 20 Removed 20 litres mixture: Milk removed = (3/4)├Ч20 = 15, Water removed = (1/4)├Ч20 = 5 Left: Milk = 60тИТ15 = 45, Water = 20тИТ5 = 15 Add 20 litres water: Water = 15+20 = 35 New ratio = 45:35 = 9:7

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