SOLUTION: If I have a 80% in my class right now, what do I need to get on my final exam if it is worth 30%?

Question 546793: If I have a 80% in my class right now, what do I need to get on my final exam if it is worth 30%?
Answer by JBarnum(2146) (Show Source): You can put this solution on YOUR website!
say u have 100 total points in class
30% is the exam making the other part 70%
you say you have an 80% of that 70% and 70% of 100=70
so .8(70)=56pts
ur missing some valuable information like what score or percentage do you need to get?
ill give some examples so you can figure out your needed percentage
--to keep 80% in class:
((56+x)/100)100=80%
56+x=80
x=24 points
24/30=80% on test
--to get 90% in class:
((56+x)/100)100=90%
56+x=90
x=34 points
34/30=113.33% on test better be extra credit..lol
--to get 85% in class:
((56+x)/100)100=85%
56+x=85
x=29 points
29/30=96.66% on test
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