
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
Two books, each with 250 pages, are placed on a shelf tightly against each other. Each cover is 10 times thicker than the paper each book is printed on. Each book has a bookmark.

The distance between the bookmarks is three times less than the total thickness of the two books. In the first book, the bookmark is placed in the middle. Between which pages is the bookmark in the second book?

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