SOLUTION: solve grade average a student scores 74 out of 100 on a test. if the maximum score on the next test is also 100 points, what score does the student need to maintain at least an ave
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Question 468449: solve grade average a student scores 74 out of 100 on a test. if the maximum score on the next test is also 100 points, what score does the student need to maintain at least an average of 80? Answer by Theo(13342) (Show Source):
You can put this solution on YOUR website! you have:
(74 + x)/2 = 80
multiply both sides of this equation by 2 to get:
74 + x = 160
subtract 74 from both sides of this equation to get:
x = 160 - 74 which becomes:
x = 86
He has to get 86 on the second test to average 80 on both tests.
Assuming he gets that, then his grade average would be calculated as:
(74 + 86) / 2 = 160/2 = 80.
