Boston Consulting Group Inte interview questions

Our client is a manufacturing company that wants to buy a plant in X location, how would you help our client determine the price of the plant?

One interviewer summarized her last project with the client. She asked many why questions in order to understand you haven't just memorized common frameworks. There was a cheese company in Holland who was looking to increase its revenue. One questions was which options should you consider to increase the revenue? You are expected to give at least 3-4 answers. In my case, she was looking for you to say "expanding other countries". Then she asked which criteria should be used before entering into new market. After a couple of more questions, she showed me a chart and wanted me calculate production cost.