SOLUTION: A friend has a 81% average before the final exam for a course. That score includes everything but the final, which counts for 15% of the course grade.
What is the best course gr
Question 1175104: A friend has a 81% average before the final exam for a course. That score includes everything but the final, which counts for 15% of the course grade.
What is the best course grade your friend can earn? %
What is the minimum score your friend would need on the final to earn a 75% for the course? %
Give answers accurate to at least one decimal place. Answer by greenestamps(13203) (Show Source):
(1) The best grade he can get is if he gets 100% on the final. It counts 15% of the total grade; his current average counts for 85% of his grade. His best possible final grade is
(2) Let x be the minimum grade he can get on the final. Then his final grade is 85% of his current average of 81, plus 15% of x. You want that average to be 75%:
The first problem only involves performing a calculation; the second requires solving an equation using basic algebra....
