SOLUTION: I have a 75% in my math class (overall score) and my final is worth 20% of that. To pass my class i need a 70%. what grade do i have to get on my final to pass the class?

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Question 754386: I have a 75% in my math class (overall score) and my final is worth 20% of that. To pass my class i need a 70%. what grade do i have to get on my final to pass the class?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!

Do it like this one.
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I have and 87% as my average grade in math. Finals are worth 15%. How much would I need to score to get at least an 80% as my average in math?
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The 87% is 85% of your grade.
F = grade on Final (or test)
87*85 + F*15 = 100*80
F = (8000 - 7395)/15
F = 40.33%