
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
Two identical test tubes were filled with 200 ml of a liquid substance each. From the first test tube, $1 / 4$ of the content was poured out and replaced with the same amount of water. This procedure was repeated 3 more times, each time pouring out a quarter of the content and refilling with the same amount of water. A similar procedure was conducted twice for the second test tube, each time pouring out a certain amount of content and refilling with the same amount of water. As a result, the concentration of the mixtures in the first and second test tubes related to each other as 9/16. Determine the amount of mixture poured out from the second test tube each time.

(12 points)

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