The average age of 36 students in a group is 14 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 answers:
A) 31  B) 36  C) 51  D) cannot be determined  E) None of these
Age of the teacher = (37 × 15 – 36 × 14) years   = 51 years.   Answer 51
<result>C</result>
The average age of 36 students in a group is 14 years. When teacher’s age is included to it, the average increases by one. What is the teacher’s age in years?