SOLUTION: if a person has 4 test scores that are 100 82 78 and 84 what will they need to score on the next test to get a 85% average?

SOLUTION: if a person has 4 test scores that are 100 82 78 and 84 what will they need to score on the next test to get a 85% average?

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Question 207534: if a person has 4 test scores that are 100 82 78 and 84 what will they need to score on the next test to get a 85% average?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
(100+82+78+84+x)/5=85
(344+x)/5=85
344+x=425
x=425-344
x=81
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