Roommates, Aaron, Doug, and Paul, have moved into a 2 bedroom + den apartment. They agreed to split the $2,450 rent by paying $600 each and a proportion of the remaining rent based on the size of their sleeping areas. Aaron sleeps in the 120 sq ft bedroom, Doug sleeps in the 140 sq ft bedroom, and Paul the 91 sq ft den. How much rent should each of them pay?