SOLUTION: you have two test grades one of 84 and 82. what must you get on the third test to have an average of 85
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Question 584328: you have two test grades one of 84 and 82. what must you get on the third test to have an average of 85
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
(84+82+x)/3=85
x=89
another way
85-84=1
85-82=3
85+1+3=89
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