
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
There are three flasks containing concentrated acid: the first with 10 g, the second with 20 g, and the third with 30 g. There is also a fourth flask with water. If some amount of water from the fourth flask is added to the first flask, and the remaining water is poured into the second flask, the concentration of acid in the first flask will be 5%, and in the second flask will be $23 \frac{1}{3} \%$. What will be the concentration of acid in the third flask if all the water from the fourth flask is poured into it?

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