
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 March this year, a newspaper conducted a survey on "What is the spirit of Lei Feng in the new era?" The number of questionnaires collected from units A, B, C, and D successively formed an arithmetic sequence, totaling 1000. For reporting purposes, a sample of 150 was then stratified by unit from the collected questionnaires. If 30 questionnaires were drawn from unit B, then the number of questionnaires drawn from unit D is $\boxed{60}$.

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