【Hai Chuan: Using Your Brain Keeps You Young】Three Brothers Divide the Horse
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Before dying, an old man divided his 17 horses among his three sons in the ratio of 1/2∶1/3∶1/9. Can these three sons carry out their father’s will? How should these 17 horses be divided?
You provide him with one, and then divide it
Horses come in different sizes, some are fat and some are thin; there are males and females, and among the females, some are pregnant and some are not. Negotiations can clarify things
I’ve seen it before; I’ve forgotten now, but it can be separated.
In total, it’s 17/18; 1/2 = 9, 1/3 = 6, 1/9 = 2