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    Question

    A mixture of 140 lit contains milk and water where milk

    is 20 lit more than water. If 28 lit mixture is taken out and 12 lit pure milk is added then ratio of milk and water becomes 39:R. Find value of R.
    A 20 Correct Answer Incorrect Answer
    B 26 Correct Answer Incorrect Answer
    C 24 Correct Answer Incorrect Answer
    D 27 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Ratio of milk and water in the mixture = 80:60 = 4/3 Now, 28 liter of mixture is taken out and 12 liter pure milk is added so, ratio of milk and water becomes => (80 – 28×4/7) + 12/(60 – 28×3/7) = 39/R => 78/48 = 39/R => R = 24

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