SOLUTION: If a student takes 5 quizzes and scores 79, 86, 74, 61 and 94, what does she need to score to have a 80 average?

Question 895530: If a student takes 5 quizzes and scores 79, 86, 74, 61 and 94, what does she need to score to have a 80 average?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If a student takes 5 quizzes and scores 79, 86, 74, 61 and 94, what does she need to score to have a 80 average?
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Let the 6th score be "x"::
Equation:
(79+86+74+61+94+x)/6 = 80
--------
394 + x = 6*80
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x = 86 (score needed on the 6th test)
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Cheers,
Stan H.
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