SOLUTION: Grace had an average test score of 89 on her first three tests.After her fourth test, her average was exactly 91.What was her score on her 4th test?
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Question 805841: Grace had an average test score of 89 on her first three tests.After her fourth test, her average was exactly 91.What was her score on her 4th test? Answer by richwmiller(17219) (Show Source):
