Question: Question 1: D&A Industries has a division of auto supplies, which manufactures oil filters in one manufacturing plant. From the plant the filters are transported to three depots before they are shipped to four retailers. The unit cost of shipping filters from the plant to each depot is given as:

The plant can produce 1200 units of filters annually. The unit cost of shipping each unit of filter from each depot to each retailer is shown in the following table along with the annual demand of each retailer:

a. Draw the network flow representation of the system.

b. Formulate the problem as a linear proz.-am. Define the variables. state the objective function and the constraints clearly. You do not need to solve the problem.

c. Is it possible to re-formulate the same problem as a transportation problem?