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Discussion :: Average

  1. If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:
    2. A.
    53.33
    B.
    54.68
    C.
    55
    D.
    None of these

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    Answer : Option B

    Explanation :


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