The average age of a class of 23 students is 22 years. The average increased by 1 when the teacher's age also included. What is the age of the teacher?  Choose the correct choice from the following: A) 40 B) 41 C) 46 D) 42 E) 49
Total age of all students =23Ã—22   Total age of all students + Age of the teacher =24Ã—23   Age of the teacher   =24Ã—23âˆ’23Ã—22=23(24âˆ’22)=23Ã—2=46   Answer is 46.
<result>C</result>
The average age of a class of 23 students is 22 years. The average increased by 1 when the teacher's age also included. What is the age of the teacher?