Hello!
There are 47 cookies. Each of those students takes 3 cookies from that collection of cookies. Therefore, you have to do 47/3 to get the amount of students in the class.
47/3= 15.66666667
Well, we know that you can’t have .6666667 of a person! Therefore, you have to round the number up to 16.
There are 16 students in Leslie’s class.
I hope this makes sense! If you have any questions, let me know :))