
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
Two brothers took their bicycles and simultaneously started a journey intending to travel $42 \text{ km}$. The older brother maintained the same speed throughout the journey; whereas, the younger brother lagged behind the older brother by 4 km every hour. However, since the older brother rested for a whole hour during the journey, while the younger brother rested only for 20 minutes, they both arrived at the finish line at the same time. How long did the trip take?

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