Hi, could you help me solve this math problem?

Hi, could you help me solve this math problem? Thanks!

GSU will offer 200 classes next term for 1500 students who take four classes each.

For each of the following distributions, compute the average class size as seen by the

teachers and the average class size as seen by the students.

i. All classes have the same size.

ii. Half the classes have 19 students, and the rest are all the same size.

iii. 175 classes have 19 students, and the rest have the same size.