
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 motorboat departed from the pier simultaneously with a raft and traveled 40/3 km downstream. Without stopping, it turned around and went upstream. After traveling 28/3 km, it met the raft. If the river current speed is 4 km/h, what is the motorboat's own speed?

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