
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 small animals in the forest are going out on an excursion, forming a line that is 40 meters long, moving forward at a speed of 3 meters per second. A little rabbit has some urgent matters and needs to rush from the end of the line to the front and then immediately return to the end. The speed of the little rabbit is 5 meters per second. After how many seconds will the little rabbit be able to return to the end of the line?

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