A contractor must cover a floor with 60 tiles. Type A tile covers 2.5 sq ft and Type B covers 3.5 sq ft. The total covered area must be 180 sq ft. Let x = number of Type A tiles. Set up and solve the system to find x and the number of Type B tiles.

• A. 20 Type A tiles40 Type B tiles
• B. 15 Type A tiles45 Type B tiles
• C. 30 Type A tiles30 Type B tiles
• D. 40 Type A tiles20 Type B tiles

Answer: (C)