
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 distance between stations $A$ and $B$ is 103 km. A train departed from $A$ heading towards $B$ and, after covering some distance, was delayed. As a result, it traveled the remaining distance to $B$ at a speed 4 km/h greater than its initial speed. Find the train's initial speed, given that the remaining distance to $B$ was 23 km longer than the distance covered before the delay, and that the time taken to travel the distance after the delay was 15 minutes longer than the time taken to travel the distance before the delay.

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