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    Question

    In a 400 litres mixture of milk and water, the ratio of

    the milk to water is 4:1. If 20 litres mixture is taken out and replaced by same quantity of water, then find the percentage of water in the resultant mixture
    A 20% Correct Answer Incorrect Answer
    B 23% Correct Answer Incorrect Answer
    C 21% Correct Answer Incorrect Answer
    D 24% Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Initial quantity of milk in the mixture = 400 × 4/5 = 320 litres Initial quantity of water in the mixture = 400 × 1/5 = 80 litres 20 litres mixture contains 16 litres milk and 4 litres water. So the quantity of water in the resultant mixture = 80 – 4 + 20 = 96 litres Percentage of water in the resultant mixture = 96/400 × 100 = 24%

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