
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
Four friends were originally planning to fly to a music festival, sharing the costs of the flight equally. However, at the last minute, one more friend was able to join them. The cost per person for the original four then decreased by $30. What was the total cost of their flight, in dollars?

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