
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
Xiao Dong and his grandfather went for a walk on the playground. It takes Xiao Dong 10 minutes to walk around the playground, while it takes his grandfather 16 minutes. If both start from the same place at the same time but walk in opposite directions, how many minutes will it take for them to meet?

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