John paints a giant mural that is 6m by 3m. The paint costs $4 per square meter. The artist can paint 1.5 square meters per hour and charges $10 per hour. How much does the mural cost? Let's think first. Chain of thought:
The mural is 6 * 3 = 18 sq meters. So the paint cost 18 * 4 = $72. The artist works for 18 / 1.5 = 12 hours. He charges 12 * 10 = $120. So the total cost is 120 + 72 = $192.
Therefore, the answer is 192.