In a class, there are 20 boys whose average age is decreased by 2 months, when one boy aged 19 years replaced by a new boy. The age of the new boy is?
Select
A) 15 years 8 months  B) 15 years  C) 16 years 4 months  D) 17 years 10 months  E) 17 years
Total decrease = (20 x 2) months   = 3 years 4 months   Age of the new boy   = 19 years - 3 years 4 months.   = 15 years 8 months.   15 years 8 monthsNSWER:15 years 8 months
<result>A</result>
In a class, there are 20 boys whose average age is decreased by 2 months, when one boy aged 19 years replaced by a new boy. The age of the new boy is?