A shirt costs 97 dollars but you
have no cash, so you borrow 50 from your Mum and 50 from you Dad. Now you have 100 dollars. After buying the shirt for 97 dollars, you have 3 dollars left.
You return 1 dollar to your Dad and 1 dollar to your mum and 1 dollar for urself. Now you owe your mum 49 and your Dad 49 so 49+49=98 plus the 1 dollar with you is 99 dollars. WHERE IS THE MISSING 1 dollar?
Small mental math! WHAT'S THE ANSWER?