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SSC Sample Paper SSC-CGL TIER - I Sample Test Paper-10

  • question_answer
    In a family there are 8 men, 7 women and 5 children whose mean ages separately are respectively 24, 20 and 6 years. Then the mean age of the family is:

    A) 18 years           

    B) 18.1 years

    C) 18.2 years                     

    D) None of the above

    Correct Answer: B

    Solution :

    Mean age of the family =         \[\frac{8\times 24+7\times 20+5\times 6}{8+7+5}\] =         \[\frac{192+140+30}{20}\] =         \[\frac{362}{20}=\]


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