
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
The length of the bus route is 16 km. During peak hours, the bus switches to express mode, significantly reducing the number of stops. As a result, the travel time from the beginning to the end of the route is shortened by 4 minutes, and the average speed of the bus increases by 8 km/h. What is the speed of the bus in express mode?

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