The average age of a class of 20 students is 22 years. The average increased by 2 when the teacher's age also included. What is the age of the teacher?  Select
A) 40 years	B) 41 years	C) 42 years	D) 43 years	E) 44 years
If age of the teacher was 22, average would not have changed.   Since average increased by 2,   Age of the teacher=19+22×1=44   ANSW44 yearsR:44 years
<result>E</result>
The average age of a class of 20 students is 22 years. The average increased by 2 when the teacher's age also included. What is the age of the teacher?