SOLUTION: going into the final exam, which will count as two thirds of the final grade. mike has test scores of 86, 80,84, and 90. what score does mike need on the final in order to earn a B

Question 256847: going into the final exam, which will count as two thirds of the final grade. mike has test scores of 86, 80,84, and 90. what score does mike need on the final in order to earn a B, which requires an average score of 80? what does he need to earn an A, which requires an average of 90?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
86+80+84+90)/4=85
2/3*x+1/3*85=80
x=77.5 to get a B or 80
x=92.5 to get an A or 90
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