How do I answer this problem. I am really confused.

Question

A small publishing company is planning to publish a new book. The production costs will include one-time fixed costs (such as editing) and variable costs (such as printing). There are two production methods it could use. With one method, the one-time fixed costs will total $16,396

, and the variable costs will be $18.50

 per book. With the other method, the one-time fixed costs will total $52,397

, and the variable costs will be $9.25

 per book. For how many books produced will the costs from the two methods be the same?

Answer 1

16,396 + 18.5X = 52,397 + 9.25X

52,397-16,396 = 18.5X - 9.25X

9.25X = 36001

X = 3892 books make both costs equal