SOLUTION: My grade is 75%. How well do i have to do on my final that is 10% of my grade to receive a B? and A? Thank you

Question 548929: My grade is 75%. How well do i have to do on my final that is 10% of my grade to receive a B? and A?
Thank you
Answer by mathie123(224) (Show Source): You can put this solution on YOUR website!
Your 75% grade accounts of 90% of your final mark.
Your final exam (I will call it F) accounts for 10%.
If you want an A (this is 80% or above):

Now solve for F

Unfortunately, it is not possible to get above 80 as you would need at least 125 on your final exam.
Now if you want a B(this is 70% or above):

Now solve for F

So this is definately possible! As long as you get over 25%, you will get over 70%. ((Note: this may change if you have rules about passing your final and if different tests are worth different amounts in the 90%, etc.))
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