
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
John drove 120 miles in 120 minutes. His average speed during the first 30 minutes was 50 mph, and his average speed during the next 30 minutes was 70 mph. Calculate John's average speed, in mph, during the last 60 minutes.

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