Southwest Airlines flies nonstop between Tampa and Albuquerque with 137-passenger planes. Considering all the costs of owning each plane plus the salaries for their crews and the fuel costs and landing fees, SWA engineers have determined that the fixed cost for a single flight is $10,400. If the costs associated with each passenger (reservations cost, check-in cost, baggage handling cost, snack cost, etc.) total $48 per passengerand the average ticket price is $157 (before the various taxes are added), what percentage of seats must be filled for the flight to break even? Contributed by Paul R. McCright, University of South Florida