2015 AMC 12A Problem 3
Problem 3 of 25EasierAlgebra
Mr. Patrick teaches math to students. He was grading tests and found that when he graded everyone’s test except Payton’s, the average grade for the class was After he graded Payton’s test, the class average became What was Payton’s score on the test?
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Solution
The sum of the other scores was The sum of all scores was
Therefore Payton’s score was
Thus, the correct answer is E.