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    Question

    Quantity of water in a 330 litres mixture (Milk +

    Water) is 30 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 45% of the whole mixture.
    A 70 litres Correct Answer Incorrect Answer
    B 50 litres Correct Answer Incorrect Answer
    C 120 litres Correct Answer Incorrect Answer
    D 150 litres Correct Answer Incorrect Answer
    E 90 litres Correct Answer Incorrect Answer

    Solution

    Quantity of water in the mixture = {(330 - 30)/2} = 150 litres

    So, quantity of milk in the mixture = (330 - 150) = 180 litres

    Total quantity of the mixture if quantity of milk in the mixture becomes 45% = 180 × (100/45) = 400

    So, quantity of water needs to be mixed = (400 - 330) = 70 litres

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