November 25, 2015

Homework Help: math hw

Posted by David on Monday, August 4, 2014 at 7:49pm.

10.Thirty students in a chemistry class took a test on which the overall average score was 78. If the average score for 15 of those students was 85, what was the average score for the remaining members of the class?
I know that "average" means dividing, but i'm not sure what to do.

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