Question 655128: Going in to the final exam which will count as three tests Jerome has test scores of 61,72,59,75, and 77. What score does Jerome need on the final in order to earn a c which requires and average of 70?
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Going in to the final exam which will count as three tests.
Jerome has test scores of 61,72,59,75, and 77.
What score does Jerome need on the final in order to earn a c which requires and average of 70?
:
let x = the final test grade
counts as 3, so use 3x and treat it like you are averaging 8 grades
:
 = 70
multiply both sides by 8, add up the grades
3x + 344 = 8(70)
3x = 560 - 344
3x = 216
x = 216/3
x = 72 to get a c (70)
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