
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 library spends 4500 yuan to buy 300 books of five types: "Zhuangzi," "Kongzi," "Mengzi," "Laozi," and "Sunzi." Their prices per book are 10 yuan, 20 yuan, 15 yuan, 30 yuan, and 12 yuan, respectively. The number of "Zhuangzi" books is the same as "Kongzi" books. The number of "Sunzi" books is 15 more than four times the number of "Laozi" books. How many "Sunzi" books are there in this batch?

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