
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
When Cheney was a child, he could walk 15 miles in 3 hours and 30 minutes, and now that he is an elderly man, he can walk 10 miles in 4 hours. Determine the time difference in minutes he takes to walk 1 mile now compared to his childhood.

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