
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
Locations A and B are 100 kilometers apart. Car A travels from A to B in $m$ hours, and car B travels from A to B in $n$ hours, where $m$ and $n$ are integers. Now, car A starts from A and car B starts from B at the same time, traveling towards each other, and they meet at point C after 5 hours. If car A has already covered half of its journey, then the distance from C to A is (blank) kilometers.

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