
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 rectangular basement room measuring 20 feet by 30 feet is flooded with water to a depth of 2 feet. To remove the water, there are three pumps available, each capable of pumping water at 10 gallons per minute initially. After pumping for 120 minutes, the speed of each pump decreases by 2 gallons per minute. Given that 1 cubic foot of water is equivalent to 7.5 gallons, find how long it will take to pump all the water out of the basement.

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