Comment by kmill

If someone says they'll pay $8.50 but then they round up and give you $9, you wouldn't say they didn't give you the $8.50 due, right? It's in the $9.

I think implicitly with the inheritance is the assumption that the father is promising at least 1/2, 1/3, and 1/9 of the flock to the respective sons, not the exact fraction. There's a solution where each son gets what's promised, and then a little more.