The average age of a class of 24 students is 23 years. The average increased by 1 when the teacher's age also included. What is the age of the teacher?
Choose the most appropriate option.
A) 40
B) 41
C) 48
D) 52
E) 43
Total age of all students =24Ã—23   Total age of all students + Age of the teacher =25Ã—24   Age of the teacher   =25Ã—24âˆ’24Ã—23=24(25âˆ’23)=24Ã—2=48   Answer is 48.
<result>C</result>
The average age of a class of 24 students is 23 years. The average increased by 1 when the teacher's age also included. What is the age of the teacher?