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    Question

    The number of boys and girls in a school is 220 and 300

    respectively. 15% of boys left the school while 30 girls took admission in the school. Find the new ratio of boys to girls in the school.
    A 7:15 Correct Answer Incorrect Answer
    B 20:39 Correct Answer Incorrect Answer
    C 4:9 Correct Answer Incorrect Answer
    D 17:30 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Required ratio = (0.85 x 220) : (300 + 30) = 187:330 = 17:30

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