The shirts cost 3*$20=$<<3*20=60>>60 before tax

The tax cost $60*.1=$<<60*.1=6>>6

So in total they paid $60+$6=$<<60+6=66>>66

# Answer

66
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
John buys 3 dress shirts.  They sell for $20 each.  He also has to pay 10% tax on everything.  How much did he pay in total?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
66
John buys 3 dress shirts.  They sell for $20 each.  He also has to pay 10% tax on everything.  How much did he pay in total?
train