A student needs an average of 90 across five quizzes. The first four scores are 88, 92, 85, and 94. What score is needed on the fifth quiz?
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Correct!
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Correct answer to question 203 (Arithmetic Reasoning): 91
Method
Work backward from the total the average requires. Five quizzes averaging 90 need 90 x 5 = 450 points, and the first four supply 359, so the fifth quiz must score 450 - 359 = 91.
Updated: November 2026
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