SOLUTION: Margarita received grades of 79%, 86%, 92%, and 83% on his first four Algebra/Trigonometry exams. What grade must she get on the next exam in order to increase her test average by

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Question 16737: Margarita received grades of 79%, 86%, 92%, and 83% on his first four Algebra/Trigonometry exams. What grade must she get on the next exam in order to increase her test average by 2 points?
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
The current average is 85. The average after being increased by 2 points is 87, so she would have to score an 87 plus enough points to add 2 points to each of her other 4 grades. That is 87 + 2*4 = 95.

As a check, average the grades: %2879%2B86%2B92%2B83%2B95%29%2F5+=+87+

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