<|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
 An alien invades Earth. It abducts 200 people. He returns 80% of the people abducted. After that, he takes 10 people to another planet. How many people did he take to his home planet? 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
50
An alien invades Earth. It abducts 200 people. He returns 80% of the people abducted. After that, he takes 10 people to another planet. How many people did he take to his home planet?
test