<|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
 B completes a work in some days. A alone can do it in 10 days. If both work together, the work can be completed in 4.444444444444445 days. How many days does B take to complete the work alone? 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
8
B completes a work in some days. A alone can do it in 10 days. If both work together, the work can be completed in 4.444444444444445 days. How many days does B take to complete the work alone?
test