
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 objects are moving towards each other from two places which are 390 km apart. The first object traveled 6 meters in the first second, and each subsequent second it traveled 6 meters more than the previous one. The second object moved at a constant speed of $12 \, \mathrm{m/s}$ and started moving 5 seconds after the first one. After how many seconds from the start of the motion of the first object will they meet?

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