SOLUTION: The range for a B grade is 75 or more but less than 85 Eric has grades of 73, 65 77, 74 before taking the final exam . What possible grade would he need to get a B (Assume a maximu

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Question 15554: The range for a B grade is 75 or more but less than 85 Eric has grades of 73, 65 77, 74 before taking the final exam . What possible grade would he need to get a B (Assume a maximum of 100 points are possible on the final exam)
Answer by pwac(253) About Me  (Show Source):
You can put this solution on YOUR website!
An average of at least 75 needed from 5 exams
So he needs %28x%2B73%2B65%2B77%2B74%29%2F5=75Multiply both sides by 5
to give x+289=375 Subtract 289 from both sides to give
x=86
So Eric needs 86 or more for his B grade.
Pete