
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 two classes, Class A and Class B, in the fifth grade. The number of students in Class A is $5 / 7$ times the number of students in Class B. If 3 students are transferred from Class B to Class A, then the number of students in Class A becomes $4 / 5$ of the number of students in Class B. How many students were originally in Class A?

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