The average age of 50 students in a class is 14 years. If the age of teacher is also included, the average becomes 15 years, find the age of the teacher.  Pick one:
A) 30	B) 65	C) 60	D) 55	E) 56
Explanation:   If teacher's age is 14 years, there is no change in the average. But teacher has contributed 1 year to all the students along with maintaining his age at 15.   Age of teacher = Average age of all + Total increase in age   = 15 + (1 x 50 ) = 65 years   Answer:65
<result>B</result>
The average age of 50 students in a class is 14 years. If the age of teacher is also included, the average becomes 15 years, find the age of the teacher.