
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 boat has a speed of 24 mph in still water. There is a river with a current of 6 mph, where the boat travels a distance of 3 miles downstream and then returns. Calculate the ratio of the average speed for the round trip to the speed in still water.
**A**) $\frac{12}{13}$
**B**) $\frac{15}{16}$
**C**) $\frac{17}{18}$
**D**) $\frac{19}{20}$

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