
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 person travels downstream from point $A$ to point $B$ by boat, then travels upstream from point $B$ to point $C$, taking a total of 3 hours. It is known that the speed of the boat in still water is $8 km/h$, and the speed of the water flow is $2 km/h$. If the distance between points $A$ and $C$ is $2 km$, then the distance between points $A$ and $B$ is ______ $km$.

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