SOLUTION: I have an average grade of 71.2% in class. Assuming there are no other scores left besides the final, what do i need to end up with 80% in the class. Final is worth 25% of grade.

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Question 940490: I have an average grade of 71.2% in class. Assuming there are no other scores left besides the final, what do i need to end up with 80% in the class. Final is worth 25% of grade.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Let x be your final exam score.

71.2*.75 + x*.25 >= 80

53.4 + .25x >= 80

x >= 106.4

So you would need at least 106.4%. Assuming your final is out of 100%, an 80% is unattainable without extra credit.