Puzzles/Arithmetical puzzles/Hens and Eggs/Solution

Where k is some solvable constant:

Hens * Days = k * Eggs

$1 \frac {1}{2} * 1 \frac {1}{2} = k * 1 \frac {1}{2}$

$k = 1 \frac {1}{2}$

$1 * 1 = 1 \frac {1}{2} Eggs$

$Eggs={1\over {1 \frac {1}{2}}}={1\over {3\over 2}}={2\over3}$