
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 pedestrian left point $A$ for point $B$, and with some delay, a second pedestrian left. When the first pedestrian had covered half the distance, the second pedestrian had walked 15 km, and when the second pedestrian had covered half the distance, the first pedestrian had walked 24 km. The pedestrians arrived at point $B$ simultaneously. What is the distance between points $A$ and $B$?

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