SOLUTION: Assume that to earn a B grade or higher in a college course you need at least an average of 80% on the five exams that are each worth 100 points. You have scores of 75, 83, 74, and

Question 787465: Assume that to earn a B grade or higher in a college course you need at least an average of 80% on the five exams that are each worth 100 points. You have scores of 75, 83, 74, and 69 so far in the semester. What is the lowest score you can receive on your fifth exam in order to earn a B grade?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Assume that to earn a B grade or higher in a college course you need at least an average of 80% on the five exams that are each worth 100 points. You have scores of 75, 83, 74, and 69 so far in the semester. What is the lowest score you can receive on your fifth exam in order to earn a B grade?
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Let the 5th score be "x":
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Equation:
(75 + 83 + 74 + 69 + x)/5 = 80
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(301+x) = 400
x = 99 (Score you need on the 5th test)
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Cheers,
Stan H.
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