
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
To travel the 140 kilometres between Glasgow and Dundee, John travels half an hour by bus and two hours by train. The train travels 20 km/h faster than the bus. The bus and the train both travel at constant speeds. What is the speed of the bus?

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