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.
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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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