
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
I have a bag with red marbles and green marbles in it. Initially, the ratio of red marbles to green marbles is 3:2. If I remove 15 red marbles and add 25 green marbles, the new ratio will be 2:5. How many red marbles were in the bag originally?

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