
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
Tom, Dick, and Harry started out on a $150$-mile journey. Tom and Harry went by automobile at the rate of $30$ mph, while Dick walked at the rate of $4$ mph. After traveling a certain distance, Harry got off and walked at $6$ mph, while Tom went back to pick up Dick and then drove him to the destination, arriving at the same time as Harry. Determine the number of hours required for the trip.
A) 10 hours
B) 11 hours
C) 12 hours
D) 13 hours

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