Formula
Required final = (Target − Current × (1 − w)) ÷ w, where w is the final's weight as a decimal. Example: current 85%, target 90%, final worth 20% → (90 − 85×0.8) ÷ 0.2 = 110%, so 90% is out of reach.
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Related guides
FAQ
How is the score I need on my final calculated?
(Target − Current × (1 − weight)) ÷ weight.
What if the answer is over 100%?
The target isn't reachable with the final alone unless extra credit is available.