
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
Two people, Person A and Person B, start from locations $A$ and $B$ respectively at the same time and travel towards each other. After meeting, Person A’s speed increases by 10 km/h and Person B’s speed decreases by 5 km/h. When Person A reaches location B, Person B has just reached the midpoint between locations $A$ and $B$. If originally Person B’s speed was twice that of Person A’s speed, then the original hourly speed of Person A is $\qquad$ km.

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