Question

37. The average age of 15 boys is
decreased by 3 months, when one boy
aged 14 years is replaced by a new boy.
The age of the new boy is
(A) 10 years 3 months
(B) 12 years
(C) 11 years
(D) None of these​

Answer 1

Answer:

A. I guess not sure but in my opinion you should write option A

Answer 2

Step-by-step explanation:

according to question,

The average age of one boy is 3month Or 1/4

therefore 15 boys =15*1/4=15/4

so, when new boys is coming and old boy replace the new boy age,

14-15/4

56-15/4

41/4=10.25years Or 10year 3month