
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]


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After the start of the school year, a middle school randomly sampled 80 students from the first-year high school class to conduct a survey on family conditions. After some time, they randomly sampled another 100 students from the same year level for a study situation survey and found that 20 students had been sampled previously. Estimate the total number of students in the first-year high school class.

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