Cats and Dogs

We can solve this using three system of equations:

$d^2=16\implies d=4$

$4\times c^2=36\implies c^2=9\implies c=3$

$3\times4\times b=72\implies b=6$

Thus: $3+4+6=13$

d: dog, c: cat, b: bird

In the first equation 16 is the perfect square, so dog represents 4. In second equation 36 divided by 4 is equal to 9, so cat represents 3. In third equation 4*3 is equal to 12. 72 divided by 12 is equal to 6. So 4+3+6=13

If you take the square root of 16 in the first equation, you can figure out that “dog = 4.”

Then, when you divide 36 by 4, you get that “cat x cat = 9.” Since the square root of 9 is 3, then “cat = 3.”

If you divide 72 by 4, then by 3, you find that “bird = 6.”

So 4 + 3 + 6 = 13