
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 people, A and B, start walking towards each other from points A and B simultaneously. A's speed is three times B's speed. After 60 minutes, they meet. After meeting, A's speed is reduced to half its original speed, while B's speed remains unchanged. If they continue walking, how many minutes will it take for B to reach point A after A has reached point B?

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