Can Wyoming Solve this Impossible Horse Riddle? [POLL]

You see them all the time on social media - math problems or math riddles.  However a recent math problem is going viral and has received lots of guesses as to the correct answer.  This latest question about a man buying and selling a horse, should be easy for someone in Wyoming, right?

The riddle about a man buying and selling a horse, reads:

A man buys a horse for $60.  He sells the horse for $70.  He then buys the horse back for $80 and sells it again for $90.  In the end, how much money did the man make or lose? Or did he break even?

Can you solve the riddle?  What is the correct answer?

Thanks for taking a crack at solving this math problem, we'll reveal the correct answer and why in a few days!