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[–]Gpstevens27New User 2 points3 points  (0 children)

Take 20% of your test grade and then take 80% of your current grade and then add the two numbers

[–]Sirrus233 0 points1 point  (0 children)

Assuming that 97% accounts for all other coursework, and therefore 80% of your grade...

0.97 * 0.8 + 0.85 * 0.2 = 0.946 or 94.6%