
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
After biking for 3 hours on a plain track, where Daniel’s speed is 20 mph and Elsa's speed is 18 mph, and then continuing onto a hilly track for an additional hour where Daniel’s speed reduces to 16 mph and Elsa’s reduces to 15 mph, calculate the difference in the total distance traveled by Daniel and Elsa after these 4 hours of biking.

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