The average age of a class of 22 students is 21 years. The average increased by 1 when the teacher's age also included. What is the age of the teacher? Select the correct option
A) 44  B) 48  C) 45  D) 43  E) 50
Total age = 22 * 21   tot age of all stu + age of the teacher = 23*22   age of the teacher = 23*22-22*21= 
<gadget id="calculator">23*22-22*21</gadget>
<output>44</output>
44   44NSWER 44
<result>A</result>
The average age of a class of 22 students is 21 years. The average increased by 1 when the teacher's age also included. What is the age of the teacher?