
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
Harriet ran a $1000 \mathrm{~m}$ course in 380 seconds. She ran the first $720 \mathrm{~m}$ of the course at a constant speed of $3 \mathrm{~m} / \mathrm{s}$. She ran the remaining part of the course at a constant speed of $v \mathrm{~m} / \mathrm{s}$. Calculate the value of $v$.

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