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    Question

    When 10 litres of water is added to a mixture of milk

    and water, the ratio of quantity of milk and water becomes 4:5. Instead, if 20 litres of water had been added, then the ratio of quantity of milk to that of water would become 3:4. Find the quantity of milk in the initial mixture.
    A 136 Correct Answer Incorrect Answer
    B 187 Correct Answer Incorrect Answer
    C 120 Correct Answer Incorrect Answer
    D 110 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the quantity of milk in the initial mixture be 'x' litres. Since, after the addition of 10 litres of water, the ratio of milk and water becomes 4:5, the quantity of water in the initial mixture will be (5/4)×x−10 litres. Therefore, the quantity of milk in the mixture = x = 120 litres.

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