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    Question

    Out of 750 students, the ratio of boys to girls is 6:4. The

    ratio of boys who passed to those who failed is 8:1, and that of girls is 7:3. How many students passed the exam?
    A 760 Correct Answer Incorrect Answer
    B 610 Correct Answer Incorrect Answer
    C 540 Correct Answer Incorrect Answer
    D 375 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Number of boys = (6/10) × 750 = 450

    Number of girls = (4/10) × 750 = 300

    Required number of students = (8/9) × 450 + (7/10) × 300 = 400 + 210 = 610

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