In the class, there are a teacher and several students. It is known that the teacher's age is 24 years older than the average age of the students and 20 years older than the average age of all present in the class. How many students are in the class?

#
The assumption that all students are of the same age does not affect the average age and, therefore, the answer. Under this assumption, the age of the student is 4 years less than the average age of all present. To "balance" the 20 years "excess" of the teacher, the number of students should be $20: 4=5$.

## Answer

5 students.