Where is the remaining Dollar?

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Three people check into a hotel.
They pay $30 to the manager and go to their room.
The manager finds out that the room rate is $25 and gives the bellboy $5 to return to the guests.
On the way to the room the bellboy reasons that $5 would be difficult to split among three people
so he pockets $2 and gives $1 to each person.
Now each person paid $10 and got back $1. So they paid $9 each, totaling $27.
The bellboy has another $2, adding up to $29.
Where is the remaining dollar?

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This is a nice nonsense. Each guest paid $9 because they gave $30 and they were given back $3. The manager got $25 and the difference ($2) has the bellboy. So it is nonsense to add the $2 to the $27, since the bellboy kept the $2.