
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
Sasha and Ilya were supposed to run 600 meters. Sasha ran for the first half of the time and walked for the second half. Ilya ran the first half of the distance and walked the second half. The boys started and finished at the same time. They both walk at a speed of 5 km/h. What was Ilya's running speed if Sasha ran at a speed of 10 km/h?

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