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    Question

    In a school of 960 students, the ratio of boys to girls is

    5:3. During the annual test, 20% of boys and 25% of girls did not pass. What is the number of students who failed the test?
    A 240 Correct Answer Incorrect Answer
    B 160 Correct Answer Incorrect Answer
    C 210 Correct Answer Incorrect Answer
    D 285 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

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

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

    Required number of students = 0.20 × 600 + 0.25 × 360 = 120 + 90 = 210

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