
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
Sam drove 120 miles in 2 hours. During the first 40 minutes, his average speed was 50 mph, and during the next 50 minutes, his average speed was 60 mph. What was his average speed, in mph, during the last 30 minutes?
A) 72 mph  
B) 72.5 mph  
C) 73 mph  
D) 73.33 mph  
E) 74 mph

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