Question

    A mixture contains 40 ml water and rest ‘x’ ml milk.

    When 0.5x ml of water is added to the mixture, the quantity of water becomes 2/5th of the mixture. Find the value of ‘x’.
    A 120 Correct Answer Incorrect Answer
    B 150 Correct Answer Incorrect Answer
    C 200 Correct Answer Incorrect Answer
    D 240 Correct Answer Incorrect Answer

    Solution

    According to the question,
    Quantity of water after addition of 0.5x ml water = (40 + 0.5x)
    Total quantity of the mixture = 40 + 0.5x + x = (40 + 1.5x)
    Therefore,
    (2/5)(40 + 1.5x) = (40 + 0.5x)
    Or, 80 + 3x = 200 + 2.5x
    Or, 0.5x = 120
    Or, x = 240

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