
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 oil barrels, A and B, with a total of 100 kilograms of oil. When 15 kilograms of oil from barrel B is poured into barrel A, the amount of oil in barrel A becomes 4 times that in barrel B. How many kilograms of oil did barrel A originally have more than barrel B?

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