
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 fast train consisting of 8 cars, each $10 \mathrm{~m}$ long, with a locomotive and coal car together measuring $24 \mathrm{~m}$, moves at a speed of $60 \mathrm{~km/h}$ and passes by a passenger train. How long is the fast train visible from the passenger train's window if the passenger train is stationary, moving in the opposite direction, or moving in the same direction at a speed of $42 \mathrm{~km/h}$?

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