Once upond a time there's a boy call Snow White and he lend 50 dollars from his father and another 50 dollars from his mother
And when he pass by a shop, he was attracted by a pair of sport shoes which was tagged 97 dollars, and he bought it
He was very happy with what he has, now he left only 3 dollars, he kept 1 dollars, and pay his father 1 dollars, and his mother 1 dollars also
afterall, when he add all sum together and he find that 1 dollars is missing
so where is the 1 dollars, can you guys help him ?