https://hrubos.tech/blogy/content/images/20260107074146-yellow_area_teaser_sol.png

If we put into ratio areas of independent triangles eg 33/16/2 => 1:1.45:1.2 and then we divide 14% by number we get exactly 3.9 and 100-61=39% It is so because ratios preserve tan(a) which is vector's directional part from equation y=ax+b where a=k=tan(alpha)

So now we have smarter algorithm based on derivations or tan(alpha) ^^^ And how do we know 14%? Easy: 39%-25% white triangle is 14% ;)

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