Question 103027: Your test scores for the semester are 87, 84, and 85. Can you raise your test average to 90 with your next test?
Answer by doukungfoo(195)   (Show Source):
You can put this solution on YOUR website! Currently there are three test scores:
87, 84, 85
so the current test average is
(87+84+85)/3 = 85.33333333...
Now if we assume that the highest grade you can make on the next test is 100
then the new test average would be
(87+84+85+100)/4 = 89
So the answer is no.
Of course if were possible to score higher that 100 with bonus questions then a score of 104 on the next test would result in a test average of 90.
and a score of a 102 on the next test would result in a test average of 89.5 which could be rounded to a 90 depending on the specifics of how the instructor records grades.
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