In a class, there are 20 boys whose average age is decreased by 2 months, when one boy aged 17 years replaced by a new boy. The age of the new boy is? Choose the correct option
A) 14 years 8 months	B) 15 years	C) 13 years 8 months	D) 17 years 10 months	E) 17 years
Total decrease = (20 x 2) months   = 3 years 4 months   Age of the new boy   = 17 years - 3 years 4 months.   = 13 years 8 months.   ANSWER:13 years 8 months
<result>C</result>
In a class, there are 20 boys whose average age is decreased by 2 months, when one boy aged 17 years replaced by a new boy. The age of the new boy is?