Carla paid for an Introduction to Painting course at Color Castle Art Studio. The cost of the course covers 12 painting classes. She also bought a beginner's painting kit for $28. Carla paid $220 in all. How much does each painting class cost?
The painting kit cost $28, so Carla paid for the course $220 - $28 = $<<220-28=192>>192.
Each painting class costs $192 / 12 classes = $<<192/12=16>>16. Answer: \boxed{16}.