There are 24 sixth graders and 47th graders mr. chan wants to divide both grades into groups of equal size with the greatest possible number of students in each group how many students should be in each group

8 students.

Step-by-step explanation:

We have been given that there are 24 sixth graders and 40 7th graders. We are asked to find the greatest possible number of students in each group having equal size.

To solve our given problem, we will find greatest common factor of 24 and 40.

Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24.

Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40.

We can see that greatest common factor of 24 and 40 is 8, therefore, there would be 8 students in each group.