The average age of 32 students in a group is 16 years. When teacher’s age is included to it, the average increases by one. What is the teacher’s age in years?	Choose the correct choice from the following.
A) cannot be determined
B) None of these
C) 48
D) 49
E) 50
Age of the teacher = (33 × 17 – 32 × 16) years   = 49 years.   Answer 49
<result>D</result>
The average age of 32 students in a group is 16 years. When teacher’s age is included to it, the average increases by one. What is the teacher’s age in years?