<|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
 A small water pump would take some hours to fill an empty tank. A larger pump would take 1/4 hour to fill the same tank. It would take both pumps 0.23076923076923078 hours, working at their respective constant rates, to fill the empty tank if they began pumping at the same time. How many hours would it take the small water pump to fill the empty tank 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
3
A small water pump would take some hours to fill an empty tank. A larger pump would take 1/4 hour to fill the same tank. It would take both pumps 0.23076923076923078 hours, working at their respective constant rates, to fill the empty tank if they began pumping at the same time. How many hours would it take the small water pump to fill the empty tank alone?
test