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    Question

    In a mixture of wine and water, there is only 28% water.

    After replacing the mixture with 5 litre of pure wine, the percentage of wine in the mixture becomes 74%. Find the quantity of new mixture?
    A 60 litre Correct Answer Incorrect Answer
    B 70 litre Correct Answer Incorrect Answer
    C 65 litre Correct Answer Incorrect Answer
    D 66 litre Correct Answer Incorrect Answer

    Solution

    Ratio = 13:1    new mixture = 13 + 1 = 14 units   Mixture = 14 × 5 = 70 litre    Alternate Method:   Initially water is 28% and finally water is 24%   This means, 2% water is removed due to the removal of 5 litre of the mixture.   In other words, 5 litre of the mixture contains 2% of water   Therefore, to contain 28% of water, mixture quantity    = (5 x 28)/2   = 70 litre

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