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    Question

    Total number of students in a college is 960. The ratio of

    boys to girls is 3:5. The ratio of boys who passed to those who failed is 7:2. The ratio of girls who passed to those who failed is 4:1. Find the total number of students who passed.
    A 760 Correct Answer Incorrect Answer
    B 615 Correct Answer Incorrect Answer
    C 525 Correct Answer Incorrect Answer
    D 375 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Number of boys = (3/8) × 960 = 360

    Number of girls = (5/8) × 960 = 600

    Required number of students = (7/9) × 360 + (4/5) × 600 = 280 + 480 = 760

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