The average age of a class of 20 students is 14 years. The average increased by 2 when the teacher's age also included. What is the age of the teacher?
Select the correct option.
A) 40 years B) 41 years C) 42 years D) 43 years E) 36 years
If age of the teacher was 14, average would not have changed.   Since average increased by 2,   Age of the teacher=14+22×1=36   ANSW36 yearsR:36 years
<result>E</result>
The average age of a class of 20 students is 14 years. The average increased by 2 when the teacher's age also included. What is the age of the teacher?