SOLUTION: one of five exams,Alex has scored 84,86,71,91, and 98 points out of 100. He wants to earn at least a B in the course, which corresponds to an overall average grade of 82 or better.

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: one of five exams,Alex has scored 84,86,71,91, and 98 points out of 100. He wants to earn at least a B in the course, which corresponds to an overall average grade of 82 or better.      Log On

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Question 151688: one of five exams,Alex has scored 84,86,71,91, and 98 points out of 100. He wants to earn at least a B in the course, which corresponds to an overall average grade of 82 or better. Out of 100 points what is the minimum number of points. Alex must earn on the final exam to achieve this goal?
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
We go Basic Averaging,
%28E%5B1%5D%2BE%5B2%5D%2BE%5B3%5D%2BE%5B4%5D%2BE%5B5%5D%2BE%5B6%5D%29%2F6=82
%2884%2B86%2B71%2B91%2B98%2BE%5B6%5D%29%2F6=82
cross multiply,
%286%2A82%29-%2884%2B86%2B71%2B91%2B98%29=E%5B6%5D
492-430=E%5B6%5D
62=E%5B6%5D ---------------> score AT LEAST on the final exam to have at least a B grade. If you have this score, you'll have the min. requirement average of 82 for the B grade.
thank you,
Jojo