
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
It takes Isabella 90 seconds to walk down an escalator when it is not operating, and only 30 seconds to walk down the escalator when it is operating. Determine the time it takes for Isabella to ride down the operating escalator when she just stands on it.

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