Question

The average of the students of a class is 12 years . The average age of 15 of them is 10 years and the average age of the remaining is 13 years . How many students are there in the class ? ​

Answer 1

Answer:

there are 9 students

Step-by-step explanation:

average age of the student is 12years

average age of 15 of them is 10years

and the remaining students are of years

students are in class = (12+10-13)years

number of students are in class = 9 students