
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 group of students from a school set off to visit a science and technology museum. The distance between the school and the museum is $15$ km. Some students ride bicycles and leave first. After $15$ minutes, the remaining students depart by bus. They all arrive at the museum at the same time. Given that the speed of the bus is $1.5$ times the speed of the bicycles, what is the speed of the students riding bicycles in km/h?

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