
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
At 9 a.m., a self-propelled barge departed from point $A$ traveling upstream and arrived at point $B$. Two hours after arriving at $B$, the barge departed for the return journey and arrived back at $A$ at 19:20 the same day. Assuming the average speed of the river current is 3 km/h and the barge's own speed remains constant, determine when the barge arrived at point $B$. The distance between points $A$ and $B$ is 60 km.

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