Three men go into a hotel and book a room. The room costs £30 for one night and the guys each hand over £10 to the Manager and head off to the room.
Later that day the Manager realises that the room should have only cost £25, so he calls the Bellboy over, hands him £5 and tells him to return it to the gentlemen.
On the way up in the lift, the Bellboy wonders how he's going to split the £5 between the three men. He knocks on the door and when it's answered gives each of the three men £1.00 back, he keeps the other £2.00.
Now the men have paid £9 each for the room and the Bellboy has the £2.
Where did the other pound go???