Nora wants to find her average grade in her science class. She has earned a score of 85% on two tests, 92% on three tests, and 94% on her most recent test. What is Nora’s mean, or average, test score?

Nora has six test scores: two scores of 85%, three scores of 92%, and one score of 94%. Their total is (2 × 85) + (3 × 92) + 94 = 540. Dividing by the six tests gives 540 ÷ 6 = 90%, so her mean score is 90%.

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