
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
Given that 100 books are to be purchased in total, consisting of type A and type B books, where type A books cost $10 each and type B books cost $8 each, if x books of type A are purchased, calculate the cost of purchasing type B books.

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