
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
A river has a constant flow rate of 3 miles per hour. A boat with a constant speed travels 4 miles downstream and then returns to the starting point, taking a total of 1 hour (not counting the time spent turning around). Find the ratio of the downstream speed to the upstream speed.

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