<|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
 Sally had 39 baseball cards , and 9 were torn . Sara bought 24 of Sally 's baseball cards. Now , Sally has _____ baseball cards . 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
15
Sally had 39 baseball cards , and 9 were torn . Sara bought 24 of Sally 's baseball cards. Now , Sally has _____ baseball cards .
test