Sometimes a question is so simple yet your brain turns it into something harder. That's kind of what's happening with a math problem that's going viral because so few people seem to be getting the right answer.
It looks straightforward and easy, but it's causing heads to explode:
On Mumsnet where the problem was first posted, no one can seem to agree on how much he made. Think you have the answer? Scroll down to see if you're right.
The man made $20.
If you're still confused, think of it as two transactions. The guy bought and sold the horse once and made $10, then he did it again and made another $10, totaling $20. Quite the businessman.
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