He got 15/5=<<15/5=3>>3 dozen

So he bought 3*12=<<3*12=36>>36 rolls

# Answer

36
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
John goes to the bakery to buy rolls.  They sell them for 5 dollars for a dozen.  He spent 15 dollars.  How many rolls did he get?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
36
John goes to the bakery to buy rolls.  They sell them for 5 dollars for a dozen.  He spent 15 dollars.  How many rolls did he get?
train