To treat his 20 dogs, Mr. Sean charged Khalil 20*$60 = $<<20*60=1200>>1200

Khalil also paid $40*60 = $<<40*60=2400>>2400 to Mr. Sean to treat his cats.

Altogether, Khalil paid Mr. Sean $2400+$1200 = $<<2400+1200=3600>>3600 to treat his pets.

# Answer

3600
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Mr. Sean has a veterinary clinic where he charges clients $60 to treat a dog and $40 to care for a cat. If Khalil took 20 dogs and 60 cats to the clinic for treatment, how much money did he pay Mr. Sean?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3600
Mr. Sean has a veterinary clinic where he charges clients $60 to treat a dog and $40 to care for a cat. If Khalil took 20 dogs and 60 cats to the clinic for treatment, how much money did he pay Mr. Sean?
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