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    Question

    The number of red and blue marbles in a box were in the

    ratio 6:11. There were 100 more blue marbles than red marbles. Later, 15 red and 25 blue marbles were taken out. What is the ratio of remaining blue marbles to red marbles?
    A 25:49 Correct Answer Incorrect Answer
    B 13:7 Correct Answer Incorrect Answer
    C 48:55 Correct Answer Incorrect Answer
    D 12:19 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the original number of red and blue marbles be '6x' and '11x', respectively

    According to the question,

    11x - 6x = 100

    So, x = 100 ÷ 5 = 20

    So, original number of red and blue marbles = 120 and 220, respectively

    Required ratio = (220 - 25):(120 - 15) = 195:105 = 13:7

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