SOLUTION: A statistics student has grades of 82, 95, 93, and 78 on four hourly exams. He must average 90 or higher to receive an A for the course. What scores can he receive on the final exa

Question 986236: A statistics student has grades of 82, 95, 93, and 78 on four hourly exams. He must average 90 or higher to receive an A for the course. What scores can he receive on the final exam and earn an A if:
The final is equivalent to two hourly exams (200 points maximum)?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

In order to have a 90 average over 6 exams (the four he has done plus the two that the final is worth), then his total of all six scores must be 6 times 90 or more. Add up the scores he already has, subtract from 6 times 90, then divide by 2 to find the necessary score for the final.

John

My calculator said it, I believe it, that settles it

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