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Railways Quantitative Aptitude Average Sample Paper Average & Problems on Ages Sample Test Paper-7

  • question_answer
    The average age of the family of five members is 24. If the present age of youngest member is 8 yr, then what was the average age of the family at the time of the birth of the youngest member?

    A)  20 yr

    B)         16 yr

    C)  12 yr               

    D)  18 yr

    Correct Answer: B

    Solution :

    [b] Total age of the family of five members \[=24\times 5=120\] Total age of the family of five members before 8 years. \[=120-5\times 8=120-40=80\] So, Required average age \[=\frac{80}{5}=16\,\,yr\]


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