Question 934748
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 = {{{(4(98.6)+62)/5}}} 
Av = {{{(394.4 + 62)/5}}}
Av = {{{456.2/5}}}
Av = 91.28%, still a very good grade
:
Now you can calculate the other grade averages using this method