Would it be possible to get a more detailed answer on the following question?

"You are the manager of two plants in Mexico that manufactures shoes. The combined monthly output of both plants is 10000 shoes. In at most one page, explain , based on your understanding of chapter 7 the cost of production, how you would best divide this output of 10000 pairs of shoes between the two plants. ... (The rest of this question you can find on your site.) ...."

The answer provided was basically an equation that discussed putting numbers in when I was hoping for a little more detail on how to answer this case problem.