
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 university student traveled $150$ miles to a family event in a sedan that averages $25$ miles per gallon. For the return journey, he drove a family minivan with a normal mileage of $20$ miles per gallon, but decreased by $5$ miles per gallon. Find the average fuel efficiency for the entire journey.

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