D22: GAT - ratio and proportions - Githubissues

vaguebrownfox01 / design

design preparation

https://learn.kaphalstudio.com/learn/home/MC4C2D

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D22: GAT - ratio and proportions #156

Closed vaguebrownfox01 closed 1 year ago

vaguebrownfox01 commented 1 year ago

desired quantity / total quantity
distribution of quantities (portions)
A:B::C:D
(A/B) = (C/D)

vaguebrownfox01 commented 1 year ago

Total = N
ration A:B
then Ax + Bx = N

vaguebrownfox01 commented 1 year ago

cross multiply to make the denominator same and then compare
multiplication is faster than division