SOLUTION: Sean has taken three exams and earned scores of 85, 72, and 77 out of a possible 100 points. He needs an average of at least 80 to earn a B in the course. What range of scores on

Question 946875: Sean has taken three exams and earned scores of 85, 72, and 77 out of a possible 100 points. He needs an average of at least 80 to earn a B in the course. What range of scores on the fourth (and last) 100 point test will guarantee a B in the course?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
I assume the range for B is [80,90)

He needs at least an 86 to get a B.

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