Henry Ernest Dudeney/Puzzles and Curious Problems/148 - A Menagerie/Solution

by : $148$

 * A Menagerie

Solution
There are $12$ beasts and $24$ birds.

Proof
Let $a$ and $b$ be the number of beasts and birds respectively.

If the anomalies had the usual number of legs, there would be $96$ feet altogether.

Hence we have: