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    Question

    In a 120 litres mixture of milk and water, the ratio of the milk to water is 4:1. If 18 litres mixture is taken out and replaced by same quantity of water, then find the percentage of water in the resultant mixture

    A 30% Correct Answer Incorrect Answer
    B 31% Correct Answer Incorrect Answer
    C 33% Correct Answer Incorrect Answer
    D 32% Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Initial quantity of milk in the mixture = 120 × 4/5 = 96 litres Initial quantity of water in the mixture = 120 × 1/5 = 24 litres 18 litres mixture contains 14.4 litres milk and 3.6 litres water. So the quantity of water in the resultant mixture = 24 – 3.6 + 18 = 38.4 litres Percentage of water in the resultant mixture = 38.4/120 × 100 = 32%

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