Well, if the room rate was $25, each person was supposed to pay $8.33333333, so if the bell boy gives each of them back $1, it would be a lump sum ($8.3333 contribution + $1 credit) of $9.33333 each, or $8.33333*3person + $1*3person= $9.33333333333*3= $28 , and $28 + the $2 that the bellboy took is equal to $30...