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OpenStudy (anonymous):
Sara's overall grade in a class in based entirely on her quiz and test scores. Quizzes count for 35% of her overall grade, and her quiz average is 72. What is her approximate test average if her overall average is 84? A) 84.5 B) 90.1 C) 90.5 D) 91 E) 99 Can u guys please explain thank you :)
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OpenStudy (anonymous):
0.35*72+0.65x=84 If you solve this u get 90.4615 rounded up to 90.5
OpenStudy (anonymous):
\[.35\times 72+.65x=84\]
OpenStudy (anonymous):
what andras said
OpenStudy (anonymous):
thank you very much :)
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