Missing Dollar-tiggs18

In the missing dollar paradox, the three ladies actually only paid $25.  From the number $25 which is the new bill, you add the two that the waiter took and then also add the three dollars that were given back.  By doing this, you get 30 all together which was originally put out.  This is meant to mess with your head in a way that it shouldn’t.  Since the the new bill is $25, its almost like having a new problem and you can not think about the money the ladies gave out first.