Front Desk Puzzle

(Off topic chat)

If you're bored and want to test your front desk staff's money counting abilities, here's a fun puzzle:

Three guests enter the hostel and pay for a $30 private room. They go up to the room, when suddenly the manager realizes that they should have gotten the $25 price.

The manager sends up an employee with $5 to give back to the guests, but the employee realizes that it will be too difficult to split the $5 evenly between three persons, so he pockets $2, and gives $1 each to the three guests.

So, now each of the three guests paid $10 and got back $1. Those three payments of $9 make $27, and the employee pocketed $2, bringing the total to $29.

Where did the other dollar go?

:)