SOLUTION: Your quiz grades are 78,72,87 and 90. What score on the fifth quiz will make your average quiz grade at least 82?

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Question 536936: Your quiz grades are 78,72,87 and 90. What score on the fifth quiz will make your average quiz grade at least 82?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
(78+72+87+90+x)/5=82
327+x=82*5
327+x=410
x=410-327
x=83