28. Consider the project information in the table below (see PDF): Draw and analyze a project network diagram to answer the following questions: a. If you were to start on this project, which are the activities that you could start on at the very beginning of the project? b. How many paths are there in this project network? c. What is the critical path through this network? What is the completion time of this project? d. What is the earliest that activity G can possibly be completed? e. What is the most that activity F can be delayed in starting, without delaying the project?

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22. The Belmont Company must produce 1,500 boxes of product A each year, 2,000 boxes of product B each year, and 500 boxes of product C each year. The Belmont Company works 250 days a year, and it can make a total of 16 boxes of product a day (any mix of the products A, B, and C). In the past, Belmont would spend the first of the year producing just product A, then producing just product B when all 1,500 boxes of product A were finished, and then switch over late in the year to produce product C. However, the president of Belmont has decided that the company should follow the principles of lean operations, including smoothing production of the demand requirements of these three products into mixed-model scheduling. a. When Belmont uses its traditional schedule, how many days does it spend making product A at the beginning of the year? When it switches then to product B, how many days does it spend producing that product? How many days are then required to finish the batch of product C? b. If Belmont implements a perfectly smooth, mixed-model schedule, it will produce the same mix of three products every day. How many of each product should be in this daily mix? c. Ideally, in what order should this new daily mix be completed during the day?

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