3 house mates go to buy a new microwave at the shop!
It costs £30 so they each put up £10.
At the till the shopkeeper tells them it is actually only £25 and hands them back 5 pound coins. The 3 pals each pocket a pound and give the last £2 to the shopkeeper as a tip.
As they walk away one of them says "Hey,we all paid £10 but got a pound back so we ended up paying £9 each? 3 x 9 is £27 and we gave the guy a £2 tip. That makes £29?
What happened to the other pound?"
Anyone solve this one cos i certainly can't?
You can't add the £27 and the £2 because the £2 is already included in the £27. (i.e. £27 is made up of two payments: the £25 for the microwave and the £2 tip). Once you add in the £3 of savings, you get to £30.
