problem solving

Question

A friend has a 85% 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 would your friend would need on the final to earn a 75% for the course? %

Answer 1

say there are a total of 100 points to earn in the class. the final exam counts for 15 points, which means that the first portion of the course is counts for 85 points.

so far, Your friend got 85% of the 85 points, so he got 72.25 points.

Should he get 100% on the final exam, he would get another 15 points. so what's the best score he can earn?

He needs to earn 2.75 points of those 15 points to earn a 75% in the course. So what is the minimum score your friend would need on the final to earn a 75% for the course?