WhizKid Sounds like a trick question, but I would say $20 income. He made $10 profit after the first deal ($20 - $10 = $10). Next, he made another deal at $10 profit too ($40-$30=$10). So $10 + $10 = $20 income. It can get confusing if you start thinking about him having to borrow money, since he may have started with only $10, but I don't think it really matters.

digglehead 50 dollar's!

FluffyBunnyGirl2 Bought horse for $10 (-10), sold for $20 (+20), bought again for $30 (-30), and sold again for $40 (+40). So, it's 20+40, which equals 60. Now, we must do 60-10, which is 50. Now 50-30 is 20.

dragongirl101 $20!

Crystal Wow! Good answers! :)

WhizKid Do just one thing at a time.