Three blokes take a shared room at a motel. The room is $30, they pay the $10 each and go upstairs.
The receptionist then realises that the rooms are on special and are only $25, so, she gives the bell boy $5 to refund to the customers.
On the way up stairs the bell boy thinks, how am I going to give 3 blokes $5?
He figures that they wont know the difference, so he gives them $1 each and keeps the other $2.
This of course means that the customers paid $9 each and the bell boy kept $2. Where did the other dollar go?
