
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
A certain school has 2500 students in the 10th grade, 1500 students in the 11th grade, and 1000 students in the 12th grade. Using stratified sampling, 30 students in total are to be selected as representatives from the school, how many of them should be from the 11th grade?

Present the answer in LaTex format: \boxed{Your answer}
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