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    Question

    A solution contains alcohol and water in the ratio 5:2.

    If 25% of the solution is replaced with the same amount of water, what will be the new ratio of alcohol to water?
    A 15:11 Correct Answer Incorrect Answer
    B 11:17 Correct Answer Incorrect Answer
    C 15:13 Correct Answer Incorrect Answer
    D 17:10 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the total quantity of solution be 7x litres. Alcohol = 7x ├Ч (5/7) = 5x litres Alcohol left after removing 25% = 5x ├Ч 0.75 = 3.75x litres Water = 7x - 3.75x = 3.25x litres So, required ratio = 3.75x : 3.25x = 15 : 13

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