Riddle Time!

[Hellfighter 17]

There was $35 originally, actually. The three of them each had ten, which adds up to thirty, and then the owner had five, which adds up to thirty-five. The owner gave the five dollars to the bouncer, and then the three gave him a total of thirty dollars, thus he has all $35. He then gives the three a one dollar bill each, so they have a total of three and he has 35 - 3 = 32, and 32 + 3 = 35; the original amount.

Owner's net money: $-5

Person A's net money: $-9

Person B's net money: $-9

Person C's net money: $-9

Bouncer's net money: $+32

-5 + -9 + -9 + -9 + +32 = 0

So, either you did it wrong or that was a trick question.