SOLUTION: if i had a 72% in a class how many 100's would i need to bring it up to an 80

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Question 933702: if i had a 72% in a class how many 100's would i need to bring it up to an 80
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Please see my lesson on weighted average:
http://www.algebra.com/algebra/homework/Average/Weighted-average-e-g-Class-grades.lesson