(A true story) Marci and Skylar decided to throw a big party. Marci spent $ 585 for the catering and $50 for the invitations. Skylar spent $35 on a cake and $75 to reserve the room for the party. The invitations said that contributions to help defray the expense of the party would be accepted. The guests contributed $165 in cash, $90 in checks made out to Marci , $55 in checks made out to Skylar , and one $20 check with recipient entry blank . What should Marci and Skylar do to split the costs evenly ? Explain .