
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
Alberto and Bjorn started biking at different times. Alberto began biking at 9 a.m. and bikes at a rate of 18 miles per hour, while Bjorn started at 10 a.m. and bikes at a rate of 20 miles per hour. At 3 p.m., how many more miles has Bjorn biked than Alberto?

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