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    Question

    There are 1000 students in a school where the boy to girl

    ratio is 2:3. If 18% of boys and 12% of girls did not clear the final exam, find the total number of students who failed.
    A 240 Correct Answer Incorrect Answer
    B 160 Correct Answer Incorrect Answer
    C 144 Correct Answer Incorrect Answer
    D 285 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Number of boys = (2/5) ├Ч 1000 = 400

    Number of girls = (3/5) ├Ч 1000 = 600

    Required number of students = 0.18 ├Ч 400 + 0.12 ├Ч 600 = 72 + 72 = 144

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