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    Question

    The ratio of the quantity of milk to that of water in a

    21-liter mixture is 5:2. How much milk should be added to the mixture such that the ratio of milk to water becomes 3:1?
    A 1 liters Correct Answer Incorrect Answer
    B 5 liters Correct Answer Incorrect Answer
    C 3 liters Correct Answer Incorrect Answer
    D 9 liters Correct Answer Incorrect Answer

    Solution

    ATQ, Initial quantity of milk in the mixture = 21 ├Ч (5/7) = 15 liters Initial quantity of water in the mixture = 21 ├Ч (2/7) = 6 liters Let the quantity of milk to be added to the mixture be тАШxтАЩ liters. ATQ, Or, 15+x = 18 Or, x = 3 Quantity of milk to be added = 3 liters

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