
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
Let E be the cost per liter of gasoline used by Elmer's old car, and let x be the cost per liter of diesel fuel used by the new car. If Elmer's old car can travel 60 kilometers per liter of gasoline and his new car can travel 75 kilometers per liter of diesel fuel, and Elmer plans to take a 300 kilometers trip, determine the percent of money Elmer will save by using his new car for this trip.

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