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    Subject

    Bank Exam

    Topic

    Janata, Sonali & Agrani Bank Recruitment 2008

    The average mark obtained by 15 students was 10 and the average mark obtained by 10 students was What was the average mark obtained by all students?

    ক)
    10
    খ)
    8
    গ)
    12
    ঘ)
    15

    Explanation

    Total mark of first 15 students = 15 * 10 = 150 Total mark of first 10 students = 15 * 10 = 150 Total mark of 25 students = 150 + 150 = 300 Average = 300 / 25 = 12

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