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    Question

    There are 700 students in a college. 60% are boys. Among

    the boys and girls, 50% and 45% respectively are interested in dance. Find the number of students who are not interested in dance.
    A 242 Correct Answer Incorrect Answer
    B 374 Correct Answer Incorrect Answer
    C 364 Correct Answer Incorrect Answer
    D 345 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Total number of boys = 700 Ă— 0.6 = 420

    Total number of girls = 700 - 420 = 280

    So, number of boys who do not like dance = 420 Ă— 0.5 = 210

    So, number of girls who do not like dance = 280 Ă— 0.55 = 154

    So, required number of students = 210 + 154 = 364

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