A boy who is a massive football fan wants to buy his favourite teams football shirt, but has no money.
He borrows £25 from his Mum and £25 off his Dad, borrowing £50 in total.
The team football shirt costs £47, so he is given £3 change.
He gives £1 to his Mum and £1 to his Dad.
He owes them £24 each.
He keeps the other £1 change.
He added up how much he owes his parents: £24 + £24 = £48 + £1 in his pocket which equals £49…..
Where did the other £1 go?