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    Question

    In a class, the present students are in the ratio of

    boys to girls as 4:1. If 10 girls are absent and they form 10% of the total class strength, and no boy is absent, then find the number of boys in the class.
    A 60 Correct Answer Incorrect Answer
    B 70 Correct Answer Incorrect Answer
    C 72 Correct Answer Incorrect Answer
    D 64 Correct Answer Incorrect Answer

    Solution

    Total number of students = 10/0.10 = 100
    Number of students who are present = 100 – 10 = 90
    Therefore, number of boys in the class = 90 × 4/5 = 72

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