A friend on skype offered a promotion to who could find the correct answer.. His post: A kid borrows from his sister 50 bucks and from his cousin another 50 bucks, now he has 100 bucks. He buys a shirt with 97 bucks and receives as change 3 bucks. He gives his sister back 1 buck and his cousin another 1 buck while 1 buck remains to him. So he now owes 49 bucks to each one of the borrowers. Now the tricky part: 49 bucks + 49 bucks = 98 bucks + 1 buck in his pocket = 99 bucks Where the fuck is 1 buck?????