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    Question

    A container holds a 512 ml mixture of milk and water in

    a 9:7 ratio. If 'x' ml of water and (x + 36) ml of milk are added, the new ratio of milk to water becomes 4:3. Determine the value of 'x'.
    A 74 Correct Answer Incorrect Answer
    B 78 Correct Answer Incorrect Answer
    C 76 Correct Answer Incorrect Answer
    D 72 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Quantity of milk in 512 ml of mixture = 9/16 × 512 = 288 ml Quantity of water in 512 ml of mixture = 7/16 × 512 = 224 ml According to question; (288 + x + 36)/(224 + x) = 4/3 Or, 972 + 3x = 4x + 896 Or, x = 76

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