Question

A friend has a 82% 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

58 2/3%

Explanation:

Let's call the final as x.

Your friend has to earn 30% of x+70% of 82=75

That is 0.3x+57.4=75

0.3x=17.6

x=58 2/3