A Conundrum for Your Consideration

3 men go into a motel. After enquiring after the cost of  a room for the night, the manager informs them that a room would cost them $30. So each man pays $10, gets  room key, and each goes to the the assigned room.

A bit later, the manager realizes that the room he rented the group was actually $25 and not $30, so he sends the bellboy to the room with $5 as a refund.

On the way to the room, the bellboy can't figure out how to evenly split the $5 amongst the three men, so he decides to give each man $1 and keep the other $2 for himself.

This means that each man paid $9 for the room, which is a total of $27. The bellboy kept $2.

$27 + $2 = $29.

Where Is The Other Dollar?