SOLUTION: Two sections of a class took the same quiz. Section A had 10 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 me

Question 350617: Two sections of a class took the same quiz. Section A had 10 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 mean score for all of the students on the quiz? Round to the closest hundredth.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
For A:

.
.
.
For B:

.
.
.
So the average for both combined would be

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