Question

The average age of a class of 20 students increases
by 1, when the average of the entire class is calculated
considering the teacher whose age is 33 years. Find
the average age of the class. (Excluding the teacher)​

Answer 1

Average age of 20 students in a class is 20. Teacher's age = 441 - 400 = 41 years. Answer the age of teacher is 41 years.