There were 24 students in a class. One of them, who was 18 years old, left the class and his place was filled up by a newcomer. If the average of the class thereby, was lowered by one month, the age of the newcomer is-

A. 14 years

B. 15 years

C. 16 years

D. 17 years

Answer: Option C

Solution(By Examveda Team)

Total age decreased
= (24 × 1) months
= 24 months
= 2 years
∴ Age of the newcomer
= (18 - 2) years
= 16 years