This was my first time seeing said puzzle, and when I got to the end I instantly was thinking? WTF you need to subtract $2 to get to the price of the room, not

This was my first time seeing said puzzle, and when I got to the end I instantly was thinking? WTF you need to subtract $2 to get to the price of the room, not add to try and get to some imaginary amount of money spent. The room is $25. Everyone paid $25 for the room + a $2 "tip" to the bellhop. That said, I'm going to have fun emailing it to my parents. ;)