SOLUTION: A student scored 71, 83, and 96 on threee algebra test. what must he score on the forth test in order to have an average grade of at least 85?

Question 375526: A student scored 71, 83, and 96 on threee algebra test. what must he score on the forth test in order to have an average grade of at least 85?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi,

Let x represent the score on the forth test

(71 + 83 + 96 + x)/4 ≥ 85

(71 + 83 + 96 + x) ≥ 340

250 + x ≥ 340

x ≥ 90

he must score a least a 90 on his fourth test 

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