Two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and section B had 20 students who had a mean score of 90. Overall, what was the approximate mean score for all the students on the quiz?

A. 84.3

B. 85

C. none of these

D. cannot be determined

Question

3 February, 03:41

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Dominik Alvarez · Answer 1

B, because when you add 90+80 you get 170 and 170/2 = 85

Two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and section B had 20 students who had a mean score of 90. Overall, what was the approximate mean score for all the students on the quiz?A. 84.3B. 85C. none of theseD. cannot be determined