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    Question

    Quantity of water in a 420 litres mixture (Milk +

    Water) is 60 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 40% of the whole mixture.
    A 180 litres Correct Answer Incorrect Answer
    B 100 litres Correct Answer Incorrect Answer
    C 160 litres Correct Answer Incorrect Answer
    D 200 litres Correct Answer Incorrect Answer
    E 40 litres Correct Answer Incorrect Answer

    Solution

    Quantity of water in the mixture = {(420 - 60)/2} = 180 litres

    So, quantity of milk in the mixture = (420 - 180) = 240 litres

    Total quantity of the mixture if quantity of milk in the mixture becomes 40% = 240 × (100/40) = 600

    So, quantity of water needs to be mixed = (600 - 420) = 180 litres

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