Can You Solve This Simple Math Problem That's Driving People Crazy?

can you solve this? What did you come up with?

See my answer and the real answer below

My answer is $20...... What was yours? 

Now the correct answer is below 

Photo Credit: Getty

The guy made $20. 

YAY I was right!! lol  I honestly don't know how this is confusing but just in case you are 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.