3 men rented a room in the hotel costing $30. So they each paid $10.
Then the manager said that for that day, they had a special price of $25, and told a waiter to return $5 to the three men.
The waiter, being corrupted, took $2 for himself, and so gave then $3.
So splitting the $3, each one got $1 back. meaning that they paid 10-1=$9
So 9*3, plus the $2 that the waiter took, would be $29.
what happened to the last dollar?

yayy! I figured out why!!