Missing dollar problem This sounds silly but I saw this and I couldn't figure it out so I thought you could help.
The below is what I saw.
You see a top you want to buy for $\$97$, but you don't have any money so you borrow $\$50$ from your mom and $\$50$ from your dad.  You buy the top and have $\$3$ change, you give your mom $\$1$,your dad $\$1$, and keep $\$1$ for yourself.  You now owe your mom $\$49$ and your dad $\$49$.
$\$49 + \$49 = \$98$ and you kept $\$1$.   Where is the missing $\$1$?

He owed his parents \$49 + \$49 = \$98,but he bought the dress, \$97....therefore 
\$97 + \$1(he had left)= \$98....considering he gave the parents each a dollar,(\$2)....
\$97(cost of dress) + \$1(had with her) + \$2(gave to the parents) = \$100
