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    Question

    A mixture measuring 720 ml consists of milk and water in an 8:7 ratio. How much water should be added to ensure that the water content is 12.5% greater than the milk content in the mixture?

    A 126 ml Correct Answer Incorrect Answer
    B 96 ml Correct Answer Incorrect Answer
    C 116 ml Correct Answer Incorrect Answer
    D 106 ml Correct Answer Incorrect Answer
    E 86 ml Correct Answer Incorrect Answer

    Solution

    Quantity of milk in 720 ml of mixture = 8/15 × 720 = 384 ml Quantity of water in 720 ml of mixture = 720 – 384 = 336 ml Quantity of water that must be added = 1.125 × 384 – 336 = 432 – 336 = 96 ml

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