<|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
 At the beginning of the year, there were 25 students in the 7th grade. After seven new students joined, the percentage of straight-A students increased by 10% (if at the beginning of the year it was \( a \% \), now it is \( (a + 10)\% \)). How many straight-A students are there in the class now? 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
16
At the beginning of the year, there were 25 students in the 7th grade. After seven new students joined, the percentage of straight-A students increased by 10% (if at the beginning of the year it was \( a \% \), now it is \( (a + 10)\% \)). How many straight-A students are there in the class now?
test