
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
In a certain school, eighth-grade students went to an extracurricular practice base $15km$ away from the school. Some students rode bicycles first, and after $45$ minutes, the remaining students departed by car. They arrived at the base at the same time. It is known that the speed of the car is $4$ times the speed of the bicycle. Find the speed of the students riding bicycles.

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