
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
An express train from Basltown to Ironchester travels at a speed of 60 km/h, while an express train from Ironchester to Basltown, which departs at the same time, travels at a speed of 40 km/h.

What distance will they be apart one hour before their meeting point?

Let's assume the total distance between the two cities does not exceed 250 km.

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