Three guys rent a hotel room for $30 - they each pay $10
the hotel manager realizes that there is a special lthat night so he sends the bell hop to give them back their 5 dollars. The three guys decide that they will each take a dollar and give the bellboy $2. Now since they got back a dollar each, they each paid $9 for the room. And they gave the bellhop $2... that 3(9) + 2 = 29
where did the dollar go??