Twice as many hats as fire chief Simpson has is 2 * 15 = <<2*15=30>>30 hats.

5 more than 30 hats is 30 + 5 = <<30+5=35>>35 hats.

One less than 35 hats is 35 - 1 = <<35-1=34>>34 hats.

# Answer

34
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Before he lost one, Policeman O'Brien had 5 more than twice as many hats as fire chief Simpson. If fire chief Simpson has 15 hats, how many hats does Policeman O'Brien now have?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
34
Before he lost one, Policeman O'Brien had 5 more than twice as many hats as fire chief Simpson. If fire chief Simpson has 15 hats, how many hats does Policeman O'Brien now have?
train