Oldie but a goodie:
Three people check into a hotel. They pay $30 to
the manager and go to their room. The manager
finds out that the room rate is $25 and gives $5
to the bellboy to return. On the way to the room
the bellboy reasons that $5 would be difficult to
share among three people so he pockets $2 and gives
$1 to each person.
Now each person paid $10 and got back $1. So they
paid $9 each, totaling $27. The bellboy has $2,
totalling $29.
Where is the remaining dollar?
From: Tammy