This midterm exam consists of four problem-solving questions from Chapters 7 and

This midterm exam consists of four problem-solving questions from Chapters 7 and 8. Each question is worth 25 points. You MUST show the work for solving the problems and submit it in Microsoft Word or Excel document.
1. Compute problems 23, 24, and 25 from Chapter 7
2. Imagine that your customer base is located in North America and your suppliers are located in China. Is it possible to implement lean supply chain management under such conditions? What are the challenges now facing the firm?
In the attachment the questions are the first 3 on page 282.