
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
An alloy of copper and silver contains 1845 g more silver than copper. If some amount of pure silver, equal in weight to $1 / 3$ of the mass of the pure silver initially contained in the alloy, were added to it, a new alloy containing $83.5\%$ silver by mass would be obtained. What is the mass of the alloy and what was the initial percentage content of silver in it?

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