Question

Mrs. Bergstedt teaches six classes. In her first period class she has 19 students, her third period she has 13 students, her fourth period 19 students, her fifth period 9 students, her sixth period 14 students, and her seventh period 15 students. What is her average class size, to the nearest tenth

Answer 1

19 + 13 + 19 + 9 + 14 + 15

19 + 13 = 32
32 + 19 = 51
51 + 9 = 60
60 + 14 = 74
74 + 15 = 89

89 / 6 (the number of classes she has)
= 14.8