Question

    The average marks scored by boys and girls in a class

    are 48 and 32, respectively. The total marks obtained by the entire class is 1680, with 40 students in total. How many boys are there in the class?
    A 15 Correct Answer Incorrect Answer
    B 20 Correct Answer Incorrect Answer
    C 30 Correct Answer Incorrect Answer
    D 25 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Average marks of all the students = 1680/40 = 42 Applying Alligation we get Number of boys in the class = 5/8 × 40 = 25

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