• Numerical Ability - Problems on Ages
Question

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 new boy.

  • A) 19 years
  • B) 14 years 6 month
  • C) 15 years
  • D) 14 years 8 month
  • E) 12 years
Solution

Ana.D
Total decrease = 20 * 2 = 40 month
= 3 years 4 month
So, age of new boy = 18 years – 3 years 4 month
= 14 years 8 month

Ana.D
Total decrease = 20 * 2 = 40 month
= 3 years 4 month
So, age of new boy = 18 years – 3 years 4 month
= 14 years 8 month
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