
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
Four runners start simultaneously from the same point on a 600-meter circular track and run clockwise. Their constant speeds are 4.2, 4.5, 4.8, and 5.1 meters per second respectively. Find the time in seconds when all runners are together again at some point on the track.

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