The mural is 20*15=<<20*15=300>>300 square feet

So it takes him 300*20=<<300*20=6000>>6000 minutes

So he paints it in 6000/60=<<6000/60=100>>100 hours

That means he charges 100*150=$<<100*150=15000>>15000

# Answer

15000
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
James paints a 20 ft by 15 ft mural.  It takes him 20 minutes to paint 1 square foot and he charges $150 per hour.  How much does he charge to paint the mural?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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user
15000
James paints a 20 ft by 15 ft mural.  It takes him 20 minutes to paint 1 square foot and he charges $150 per hour.  How much does he charge to paint the mural?
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