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    Question

    A 150 litres mixture contains only water and phenyl in

    the ratio 3:2, respectively. If 20 litres of this mixture is replaced with 65 litres of alcohol, then what will be the ratio of quantity of water to that of alcohol in the resultant mixture?
    A 3:5 Correct Answer Incorrect Answer
    B 6:7 Correct Answer Incorrect Answer
    C 6:5 Correct Answer Incorrect Answer
    D 5:6 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Initial quantity of water in the mixture = 150 × (3/5) = 90 litres After removing 20 litres of the mixture, quantity of water = (150 – 20) × (3/5) = 130 × (3/5) = 78 litres Therefore required ratio = 78:65 = 6:5

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