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    Question

    Quantity of water in a 480 litres mixture (Milk +

    Water) is 120 litres less than the quantity of milk in it. Find the quantity of water to be mixed so that the quantity of milk in the mixture becomes 60% of the whole mixture.
    A 10 litres Correct Answer Incorrect Answer
    B 20 litres Correct Answer Incorrect Answer
    C 30 litres Correct Answer Incorrect Answer
    D 50 litres Correct Answer Incorrect Answer
    E 40 litres Correct Answer Incorrect Answer

    Solution

    Quantity of water in the mixture = {(480 - 120)/2} = 180 litres

    So, quantity of milk in the mixture = (480 - 180) = 300 litres

    Total quantity of the mixture if quantity of milk in the mixture becomes 60% = 300 × (100/60) = 500

    So, quantity of water needs to be mixed = (500 - 480) = 20 litres

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