The answer is 16.
How did we get there? Well, it’s algebra.
Get started like this:
Let’s call the shoes S, the cat C, and and whistle W. The first equation sets up the whole puzzle: 3 pairs of shoes added together equal 30. S + S + S = 30, so divide 30 by 3. Each pair of sneakers represents a 10.
I’m sure a math genius like you can take it from there!
h/t: Mental_Floss
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