The problem is too many used tires are piling up in empty lots. The tires come from tire stores, where they have been removed from customer cars and replaced with new tires. Because it is expensive and dangerous to dispose of the tires, they sit in lots, waiting to be burned or otherwise discarded. One positive, alternate use of these tires is to shred them into small pieces and use them to make rubberized asphalt on highway paving projects. What type of problem-and-solution organization does this paragraph use?
