Where did the £1 go
Posted by Llyn Green on January 3, 2022, 20:00:02
Mathematicians on the board, please donít spoil it until a few have had a go. |
Three people go for a pizza and the bill comes to £25, they each put a £10 note in kitty.
The waiter takes the £30 and brings their change, five £1 coins.
They each take £1 and give the waiter two £1 coins as a tip.
They have each spent £9 and the waiter has £2.
But 3 x £9 = £27 plus the waiterís tip £2 = £29
Where has the other £1 gone?