
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
The average number of pull-ups per person in a "pull-up" test was 10. Given that the first, second, third, and fifth students did 9, 12, 9, and 8 pull-ups respectively, find the number of pull-ups done by the fourth student.

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