Aero Flying School Ltd. teaches students to fly small aircraft. The following are Aero's costs: Administration costs $ 30,000 month Advertising expense 70,000 year Airport fees 20,000 month Class instructor 100 hour Classroom rental 1,200 /month Cessna 152 plane 150,000 Cessna 172 plane 230,000 Flight instructor 150 /hour Fuel 120 /flight hour Ground & maintenance crew 12,000 month Hangar rental 10,000 month Operating license 1,500 year Piper Archer III plane 280,000 On-line Text resource 16,000