
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
Shelby drives her scooter at a speed of $35$ miles per hour if it is sunny, $25$ miles per hour if it is raining, and $15$ miles per hour if it is foggy. Today she drove in the sun in the morning, in the rain around noon, and in fog in the evening, for a total of $20$ miles in $60$ minutes. Calculate the number of minutes Shelby drove in the fog.

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