
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
Points $A$ and $B$ are 600 kilometers apart. Two people, A and B, start bicycling from point $A$ to point $B$ simultaneously. Person A bicycles 40 kilometers every day, while person B bicycles 60 kilometers every other day, resting every other day. At the end of a certain day, the distance person B has left to cover to reach point $B$ is twice the distance person A has left to cover to reach point $B$.

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