3 friends decide to rent a motel room costing $30.if they divide it up evenly they would each pay $10. The manager decides to give $5 back. The bellboy thinks how am i going to divide evenly between 3 people so he puts 2 in his pocket and gives each one back a dollar. So each one end up paying $9 each. Well 3×9=27 and then add the 2 in bellboys pocket that would make $29..where did the other dollar go????