Question 116310
It should amount to the same thing if the 3 men selt one of them to
collect the $5  (assuming they knew what was going on) and give
the bellboy a  $2 tip.
  Then, They will have paid $30 - $3 = $27. If the bellboy gave the
tip back (not likely, but if he did) Then the 3 men will have been charged
$25 for the room as the desk man wanted. In other words,
the $2 gets subtracted from the $27, not added to it.