
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
Car A and Car B start simultaneously from locations A and B, respectively, and they travel between these two locations at constant speeds. After the first time they meet, Car A takes 4 hours to reach B, while Car B takes 1 hour to reach A. How many hours have both cars traveled by the 15th time they meet (excluding meetings at locations A and B)?

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