3. (9-66) Midwest Airlines flies a short nonstop with 148 passenger plans. Considering all the costs of owning each plan plus the salaries for their crews and the fuel costs and landing fees, the fixed cost for a single flight is $16,500. If the costs associated with each passenger total $75 per passenger and the average ticket price is $214 (before taxes are added), what percentage of seats must be filled for the flight to break even