SOLUTION: If my class average is 83.6 what do I need on my final (that's worth 20%) to get a B? Let's say above 80%

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Question 820062: If my class average is 83.6 what do I need on my final (that's worth 20%) to get a B? Let's say above 80%
Found 2 solutions by richwmiller, jerryguo41:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.8*83.6+.2x>=80
x>=65.6
Basically you need to pass the final

Answer by jerryguo41(197) About Me  (Show Source):
You can put this solution on YOUR website!
class average w/o final = 80%
class average(worth)+final(worth)=final(worth)
83.6%280.8%29%2Bx%280.2%29=80%281.00%29
66.88%2B0.2x=80
0.2x=13.12
x=65.6
You will need a 65.6% to keep a B average