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prealgebra intermediate

Problem

Two high school classes took the same test. One class of students made an average grade of ; the other class of students made an average grade of . The average grade for all students in both classes is:
(A)
(B)
(C)
(D)
Solution
The desired average can be found by dividing the total number of points earned by the total number of students. There are points earned and students. Thus, our answer is , or .
Final answer
B