Irene R. answered 08/13/20
BS in Mechanical Engineering and Certified math teacher for 13 years
Hi Val,
I assume you meant to use the variable s to represent the total number of students.
Then the following equation could be used to determine the total number of students as described in your question:
s = 13 c
For example , if you had 2 classes, there would be 26 students:
26 = 13 • 2