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    Question

    Quantity of water in a 450 litres mixture (alcohol +

    water) is 30 litres less than the quantity of alcohol in it. Find the quantity of water to be mixed so that the quantity of alcohol in the mixture becomes 40% of the whole mixture.
    A 200 litres Correct Answer Incorrect Answer
    B 150 litres Correct Answer Incorrect Answer
    C 140 litres Correct Answer Incorrect Answer
    D 180 litres Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Quantity of water in the mixture = (450 – 30)/2 = 210 litres So, Quantity of alcohol in the mixture = (450 – 210) = 240 litres Total quantity of the mixture = 240 x (100/40) = 600 litres Therefore, quantity of water to be mixed = 600 – 450 = 150 litres

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