
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
Two students, A and B, went to the "People's Park" 2.4 km away from the school to participate in volunteer activities. Student A walked, and student B rode a bicycle. The speed of riding a bicycle is 4 times the speed of walking. Student A left 30 minutes before student B. Both students arrived at the same time. Find the speed at which student B rode the bicycle.

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