Riddle ... Three Men Rent A Hotel Room ...?!

Riddle ... Three Men Rent A Hotel Room ...?

The cost is $30- (this happened a long time ago) so ea. man paid $10- ... The hotel employee that accepted the money suddenly realizes that the men were overcharged because the actual cost of the room was $25- ... so they give the bellboy 5 one dollar bills to return to the men. On the way to the room, the bellboy thinks to himself, these men don't know how much refund they have coming, so he keeps $2- ... He then gives the men $3- refund or $1- refund to ea. man ... w/ the $1- ea man got back, they have now paid $9- ea. ... 3 men x $9- ea. = $27- ... the bellboy kept $2- ... $27- + $2- = $29- ... the original amt. paid was $30- ... Where's the missing dollar?

1 day ago
Although Beckers was close, they did not exlain the equasion as I wrote it, which is presented by counting backwards. Their answer, 25 + 3 + 2 was derived counting forwards.
The correct answer was given by Conan

its mathmatics its not a riddle
same counting 11 fingers count backwards on one hand from 10 ..you get six ....6+5=11