Practice Test Discussion

Q)

In a class, there are 20 boys whose average age is decreased by 2 months, when one boy aged 18 years is replaced by a new boy. Find the age of the new boy?

    • Explanation

    According to the question 

    Age of new person = Age of removed person-No. of persons × Decrease in average age 

    = 18-20×212=18-103=443

     = 14.66 (or) =1423

    Hence, Option C is correct.

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