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    Question

    A batch of 480 students consists of 50% male students.

    Among them, 60% of boys and 70% of girls like science. Calculate the number of students who do not like science.
    A 142 Correct Answer Incorrect Answer
    B 168 Correct Answer Incorrect Answer
    C 125 Correct Answer Incorrect Answer
    D 145 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Total number of boys = 480 × 0.5 = 240

    Total number of girls = 480 - 240 = 240

    Number of boys who do not like science = 240 × 0.4 = 96

    Number of girls who do not like science = 240 × 0.3 = 72

    Total number of students who do not like science = 96 + 72 = 168

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