Six horses eat 12 bales of hay in 12 hours. At the same rate, how many hours will 36 bales of hay last 12 horses?
<|im_start|>system
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<|im_start|>user
Six horses eat 12 bales of hay in 12 hours. At the same rate, how many hours will 36 bales of hay last 12 horses?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
18\text{ hours}
Six horses eat 12 bales of hay in 12 hours. At the same rate, how many hours will 36 bales of hay last 12 horses?
train