<P> Thus, the sensible sum that we really desire is this one: </P> <P> $30 = $1 (inside Guest pocket) + $1 (inside Guest pocket) + $1 (inside Guest pocket) + $2 (inside bellhop's pocket) + $25 (hotel cash register) </P> <P> This sum does indeed come out to $30 . </P> <P> To further illustrate why the riddle's sum does not relate to the actual sum, we can alter the riddle so that the discount on the room is extremely large . Consider the riddle in this form: </P>

3 guys rent a room for 30 dollars