SOLUTION: My grade in math so far is a 98.6%. The final exam is worth 20% of our grade. What would be my overall math grade if I scored these on my final exam: 82% 72% 62%

Question 934748: My grade in math so far is a 98.6%. The final exam is worth 20% of our grade. What would be my overall math grade if I scored these on my final exam:
82%
72%
62%

Found 2 solutions by ankor@dixie-net.com, TimothyLamb:
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
My grade in math is a 98.6%
Our teacher said my exam is going to be worth 20% of our grade.
I think that I did really bad, so I want to know how much my grade would drop if I scored any of the following:
-82%
-72%
-62%
:
That means your 98.6 % will 80% or 4/5 of the your final grade, your exam is given as 20% or 1/5 of your final grade
:
Let's take your worst anticipated grade, 62% and see what your average is
Av =
Av =
Av =
Av = 91.28%, still a very good grade
:
Now you can calculate the other grade averages using this method
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
(1 - 0.20)*98.6 + 0.20x = ?
---
into x plug in any final-exam score you want:
---
82% ... (1 - 0.20)*98.6 + 0.20*82 = 95.28
72% ... (1 - 0.20)*98.6 + 0.20*72 = 93.28
62% ... (1 - 0.20)*98.6 + 0.20*62 = 91.28
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