SOLUTION: Lenny's average score after 3 tests is 88. What score on the 4th test would bring Lenny's average up to exactly 90?
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Question 678406: Lenny's average score after 3 tests is 88. What score on the 4th test would bring Lenny's average up to exactly 90?
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
x = 3(88) = 264 points on first three tests
...
264+y = 4(90)
y = 360 - 264
y = 96 points needed on the fourth test
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