<|im_start|>system
You are a helpful assistant. You first think about the reasoning process in the mind and then provide the user with the answer. You should try to truely solve the question by yourself without cheating.  <|im_end|>
<|im_start|>user
 In the ancient Chinese mathematical text "The Mathematical Classic of Sunzi", there is a problem stated as follows: "Today, a hundred deer enter the city. Each family takes one deer, but not all are taken. Then, three families together take one deer, and all deer are taken. The question is: how many families are there in the city?" In this problem, the number of families in the city is ______. Show your work in <think> </think> tags. And return the final answer in <answer> </answer> tags.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>
user
75
In the ancient Chinese mathematical text "The Mathematical Classic of Sunzi", there is a problem stated as follows: "Today, a hundred deer enter the city. Each family takes one deer, but not all are taken. Then, three families together take one deer, and all deer are taken. The question is: how many families are there in the city?" In this problem, the number of families in the city is ______.
test