SOLUTION: My average in my criminology class is 68%. what do i need on my final test which is 20% of my grade, to get a 70 average?

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Question 867774: My average in my criminology class is 68%. what do i need on my final test which is 20% of my grade, to get a 70 average?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
My average in my criminology class is 68%.
what do i need on my final test which is 20% of my grade, to get a 70 average?
:
let x = your find test grade
:
From the given information we know the final test is 1/5 of your grade
Then your grade to this point is 4/5 of your grade and is 68%
therefore
%28%284%2868%29%2Bx%29%29%2F5 = 70
mult both sides by 5
4(68) + x = 5(70)
272 + x = 350
x = 350 - 272
x = 78% required in you Final test
:
:'
You can confirm this yourself in the initial equation.