How do you calculate the percentage?

say you have a certain percentage (as in grade) and need to calculate how much to get on your final exam (which is 20% of your grade) to get an average of 92%



what is the exact formula to calculate that?How do you calculate the percentage?
Grade% x .8 + Exam% x .2= 92%How do you calculate the percentage?
Multiply your current average by 8, subtract from your target grade of 920, divide by 2. This is what you need on the final.

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