A researcher wants to select a sample of 50 students from four local private high schools by performing stratified sampling. The enrollments are shown in the table. How many students at each school should be included in the study?
The study should include 40 students from school A,
5 students from school B,
3 students from school C, and
2 students from school D.
I got these answers by dividing 800/4 =200/5 to get answer a 40.