SOLUTION: A student scored 73,71, and 97 on three algebra tests. What must he score on the fourth test in order to have an average grade of at least 85?

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Question 829003: A student scored 73,71, and 97 on three algebra tests. What must he score on the fourth test in order to have an average grade of at least 85?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
To average take the scores, add them, and divide by the number of scores.
Let S be the score he needs to get on the next test.
%2873%2B71%2B97%2BS%29%2F4%3E=85
%28241%2BS%29%2F4%3E=85
%28241%2BS%29%3E=340
highlight%28S%3E=99%29
Not impossible but it sounds like a tall order!