SOLUTION: what is the minimum score needed to make on the 5th test so that the mean test score is at least 85? The first 4 test were 87, 92, 76, and 89

SOLUTION: what is the minimum score needed to make on the 5th test so that the mean test score is at least 85? The first 4 test were 87, 92, 76, and 89

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Question 156318: what is the minimum score needed to make on the 5th test so that the mean test score is at least 85? The first 4 test were 87, 92, 76, and 89
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Let x = score on 5th test
.
(87+92+76+89+x)/5=85
(87+92+76+89+x)/5=85
(344+x)/5 = 85
344+x = 425
x = 81
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