SOLUTION: Rafael average for 6 tests is 82. Five of his scores are 90, 100, 65, 85 and 75 what is his sixth score

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Question 911708: Rafael average for 6 tests is 82. Five of his scores are 90, 100, 65, 85 and 75 what is his sixth score
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
(90+100+65+85+75+x)/6=82
415+x=82*6
x=492-415
x=77