There are 4 seventh grade teachers at central middle school. mr. abbott teachs 120 students in 6 classes, mrs. garcia teaches 48 students in 3 classes. ms. ngyen's 5 classes total 109 students, and ms. turner has a total of 121 students in 6 classes. what is the average number of students in each seventh-grade math class?

Abbot with 120:6
Garcia with 48:3
Nguyen with 109:5
Turner with 121:6
Just add the number of students together and divide that by the amount of total classes and that is your answer. 120+48+109+121=398 and the classes 6+3+5+6=20 so your average is 398/20 which is 19.9 so 20 people per class because there can't be .9 of a person in class.