
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 bridge is $1000m$ long. A freight train is passing through the bridge at a constant speed. It takes $60s$ for the train to pass from the beginning to the end of the bridge, and the train spends $40s$ on the bridge. Find the length and speed of the train.

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