SOLUTION: I have an 80% in my math class, and my final is worth 15% of my grade. What grade do i need to get on the final to have my grade stay an 80%?

Question 549087: I have an 80% in my math class, and my final is worth 15% of my grade. What grade do i need to get on the final to have my grade stay an 80%?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I have an 80% in my math class, and my final is worth 15% of my grade. What grade do i need to get on the final to have my grade stay an 80%?
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If final is worth 15% the previous test were worth 80 of 100 points.
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He received 80% of those 80 points = 0.8*80 = 64 points
You need 80-64 = 16 points on the final test.
You need (16/20) = 4/5 = 0.8 = 80% on the final exam.
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Cheers,
Stan H.
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