
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
In January 1, 2016, after the comprehensive implementation of the two-child policy in China, a student organization at a certain university conducted a survey on the willingness to have a second child. It is known that in the city where the university is located, there are 2,400 married women under 30 years old who meet the two-child policy, 3,600 women aged 30 to 40, and 6,000 women aged 40 and above. In order to understand whether there are significant differences in the willingness of women of different age groups to have a second child, the organization used a stratified sampling method to extract a sample of size $n$ for the survey. It is known that the number of people extracted from women aged 40 and above is 60. Then, $n=$______.

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