
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
Person A and person B both travel from location A to location B. Person A walks at a speed of 5 km/h and starts 1 hour earlier. Person B cycles at a speed of 15 km/h. After how many hours from person B's departure will they catch up with person A?

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