Mathematics: 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?

kiloStep-by-step explanation:...

A friend has a 85% average before the final exam

johnathondevilchil

21.01.2022

87.25%

Step-by-step explanation:

Data given in the question

Before the final exam for a course, the average percentage is 85%

The counting percentage of the course grade is 15%

So by considering the above information, the best course grade your friend is

$= Average\ percentage\times remaining\ percentage + percentage\ value\times counting\ percentage$ = $0.85\times 0.85 + 100\%\times 0.15$

= 0.7225 + 15

= 87.25%

The remaining percentage is come from

= 100% - 15%

= 85%

Hence, the best course grade is 87.25%

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