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    Question

    A class has 20 boys and 15 girls. The average marks of

    boys is 68 and of girls is 72. Find the approximate average marks of the whole class.
    A 69 Correct Answer Incorrect Answer
    B 99 Correct Answer Incorrect Answer
    C 23 Correct Answer Incorrect Answer
    D 47 Correct Answer Incorrect Answer

    Solution

    Total marks of boys = 20 ├Ч 68 = 1,360 Total marks of girls = 15 ├Ч 72 = 1,080 Combined total = 1,360 + 1,080 = 2,440 Total students = 35 Average = 2,440 / 35 = 488/7 тЙИ 69.71

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