
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 train travels through three sequential segments on a journey. First, it covers $x$ km at a speed of 50 km/h, then accelerates and travels $2x$ km at a speed of 100 km/h, and finally travels $3x$ km at a speed of 150 km/h. Calculate the total time taken for the journey.
A) $\frac{3x}{50}$ hours
B) $\frac{x}{50}$ hours
C) $\frac{x}{150}$ hours
D) $\frac{6x}{50}$ hours

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