A manufacture of packing material, manufacturers two type of packing tins, round and flat. Major production facilities involved are cutting and joining. The cutting department can process 300 round tins or 500 flat tins per hour. The joining department can process 500 round tins or 300 flat tins per hour. If the contribution towards profit for around tin is the same as that of a flat tin. a. Formulate a linnear programming model for this problem. b. write the dual programming for the primal linear programming. c. use the simplex method to solve the primal problem.