SOLUTION: A student scores 75% and 70% on two midterm tests where the first is worth 20% and the second is worth 25% of the final grade. The final exam is worth 55% of the final grade. What

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Question 888543: A student scores 75% and 70% on two midterm tests where the first is worth 20% and the second is worth 25% of the final grade. The final exam is worth 55% of the final grade. What does the student need to score on the final exam to earn a final grade of at least 80%
Answer by lwsshak3(11628) About Me  (Show Source):
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A student scores 75% and 70% on two midterm tests where the first is worth 20% and the second is worth 25% of the final grade. The final exam is worth 55% of the final grade. What does the student need to score on the final exam to earn a final grade of at least 80%
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let x=final exam grade required to earn a final grade of at least 80%
20%*75+25%*70+55%x=80
15+17.5+.55x=80
.55x=47.5
x=86.36
final exam grade required to earn a final grade of at least 80%=86.36%