
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 certain amount of saltwater, which is 4% salt, becomes saltwater with 10% salt content after evaporating some of the water. After adding 300 grams of 4% saltwater, the mixture becomes 6.4% saltwater. How many grams of the 4% saltwater were there initially?

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