SOLUTION: Lisa�s grades on 4 exams were 80, 92, 86, and 78. What is the lowest grade she can receive on the next exam to have an average greater than 85?

Question 1004133: Lisa�s grades on 4 exams were 80, 92, 86, and 78. What is the lowest grade she can receive on the next exam to have an average greater than 85?

Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
(80+92+86+78+x)/5 > 85
(336+x)/5 > 85
336+x > 425
x > 89 is the grade she needs to get an average of 85. If the requirement is that it must be greater than 85, then:
89+1= 90 is the lowest she needs to have an average greater than 85
Nice grades, study so yours are as good.
J
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