SOLUTION: Jill scored 71, 88, and 75 on her three exams so far. What score does she need on her last exam so that her mean score is an 83?
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Question 757416: Jill scored 71, 88, and 75 on her three exams so far. What score does she need on her last exam so that her mean score is an 83?
Answer by John10(297) (Show Source): You can put this solution on YOUR website!
Hi,
For this problem, you can use the AVERAGE FORMULA to find the last score
AVERAGE SCORE = ( S1 + S2 + S3 + S4)/ 4 = 83
You know that S1 = 71, S2 = 88, and S3 = 75. You can find S4.
Best of luck :)
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