
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
A college student drove 150 miles from his university to his hometown in a compact car, averaging 35 miles per gallon. For the return trip, the student borrowed his friend's older model SUV and traveled 180 miles, averaging only 18 miles per gallon. Calculate the average fuel efficiency, in miles per gallon, for the entire journey.

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