Talking With Teacher#!#In the Class

The backbenchers are always talking in the classroom A teacher should

The average age of 24 students and the class teacher is 16 years. If the class teacher’s age is excluded, the average reduces by one year. What is the age of the class teacher?

There are three mathematics teachers in a college in which there are 6 classes.The number of ways they can choose the classes, provided one only teacher one class only is

The average age of 33 boys and the class teacher in a class is 14 years. If the class teacher's age is 47 years. What would the average age of only the boys ?