SOLUTION: First quarter I received a 75.9% and second quarter I received a 78.2%. At the end of the semester I need to average a C(70% and up) my semester final is worth 20% of my total grad

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: First quarter I received a 75.9% and second quarter I received a 78.2%. At the end of the semester I need to average a C(70% and up) my semester final is worth 20% of my total grad      Log On


   

Question 832187: First quarter I received a 75.9% and second quarter I received a 78.2%. At the end of the semester I need to average a C(70% and up) my semester final is worth 20% of my total grade. Could you tell me what grade I need to get on the final to average a C at the end of the semester?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
There's a handy calculator at http://www.back2college.com/raisegpa.htm
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You give no other information for the third quarter. Are we to assume that the final is the only grade? And, are the first two quarters then worth 40% each?
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If so, then the question is:
(.40)75.9 + (.40)78.2 + .20x = 70
30.36 + 31.28 + .20x = 70
61.64 + .2x = 70
.2x = 8.36
Divide by .2
x = 41.8
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I suspect you left out important information.