SOLUTION: If Rodger's current grade is a 91% and he is yet to take the final which is 35% of his grade. What is the lowest he can get on the final to still receive an A (90% and above)?

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Question 632015: If Rodger's current grade is a 91% and he is yet to take the final which is 35% of his grade. What is the lowest he can get on the final to still receive an A (90% and above)?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
If Rodger's current grade is a 91% and he is yet to take the final which is 35% of his grade.
What is the lowest he can get on the final to still receive an A (90% and above)?
:
Final grade:Current grade; 35:65 = 7:13, a total of 20
:
%287x%2B13%2891%29%29%2F20 = 90
7x + 1183 = 20(90)
7x = 1800 - 1183
7x = 617
x = 617/7
x ~ 88.2 to maintain a 90 or better