Hello, all.
I just wanted to know how to calculate my final exam mark (I was never great at math, lol) based on the following:
-Three tests, each worth 20%.
-Final exam worth 40%.

Thank you in advance. :3

{Final percentage mark - [.2 x (test 1 mark in percent + test 2 mark in percent + test 3 mark in percent)]} / .4 = final exam mark in percent