3 men eat at a cafe and ask for the bill.The waitertells them £30.They pay and leave. The owner of the cafe tells the waiter he has overcharged them and to follow and give them £5 back The waiter, annoyed by the lack of a tip,steals £2 and gives the men £3. This means that each man paid £9 which is £27 plus the £2 the waiter stole is £29 .Where is the missing £1?
That should be £8.33. Doesn't quite work in decimal but if you add what each paid together with the tip and the change it comes to £30, give or take 1p.