
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
During the first part of my run, I maintained a speed of 15 miles per hour. Later, as I slowed down due to fatigue, I ran at 10 miles per hour, and in the final stretch, I reduced further to 8 miles per hour. If the total distance I covered was 164 miles and the entire run took 14 hours, for how long did I run at 15 miles per hour?

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