MATH SOLVE

4 months ago

Q:
# 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 these D. cannot be determined

Accepted Solution

A:

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