SOLUTION: in math maria has test scores of 80, 85, 72, 53, and 100. What score must maria get on the next test in order to reach an average of 81%

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Question 1051227: in math maria has test scores of 80, 85, 72, 53, and 100. What score must maria get on the next test in order to reach an average of 81%
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
Next score, unknown value x.
That will give six score values.

AVERAGE of all plus the next to be 81%
%2880%2B85%2B72%2B53%2B100%2Bx%29%2F6=81