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Discussion :: Average

  1. A group consists of two male, two female and three children. The average age of the male is 67 years, that of the female is 35 years, and that of the children is six years. What is the average age of the group?

    2. A.
    30.71
    B.
    31.71
    C.
    28.71
    D.
    35.45

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    Answer : Option B

    Explanation :


    Average = (67*2+35*2+6*3) /7
    = (134+70+18) /7
    = 222 /7
    = 31.71

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