Some large cars and small cars are parked along one side of the driveway of Plain Elementary. There is exactly 3 feet of space between every 2 cars. The large cars are 11 feet long & the small ones are 8 feet long. The driveway is 100 feet long. The cars parked at each end have no space between them and the end. How many large and small cars are parked together in the driveway?