
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 a long drive, I start off fresh, driving at 25 miles per hour. As the journey progresses and I become fatigued, my speed decreases to 15 miles per hour. If I drive for a total of 152 miles in 9 hours, for how many hours was I driving fresh? Express your answer as a common fraction.

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