see if you can answer this within one minute
So Three ballers walk into a hotel, and they ask the receptionist how much a room is. "£30" says the dude, so they all chip in a tenner take it.
The next morning when they check out, The receptionist apologises and says there was a mistake with the price and the room should have been £25, and so hands them back £5.
So to split it up evenly, they tip the Receptionist £2 and take a pound each.
So if they each put in a tenner, and got a pound back, they each payed £9
3 X £9 = £27, + £2 (tip) = £29
wheres the missing pound?
Yes I know but let them sweat a bit