
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
The water company encourages water conservation by charging water fees in the following way: for water usage not exceeding $10$ tons, a fee of $2$ yuan per ton is charged, and for the part exceeding $10$ tons, a fee of $3$ yuan per ton is charged. If Mr. Wang's average water fee in March is $2.5$ yuan per ton, how many tons of water did Mr. Wang use in March?

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