Blue Bell13 is planning its monthly production of a particular type of men’s jeans. Demands di are know for the i = 1,c, 75 different fabric parts needed to make all the combinations of waist and inseam sizes being produced. Such parts are cut from fabric laid out on cutting tables in 60 to 70 layers. A predefined set of markers

(cutting patterns) m = 1,c, 350 define how various parts may be cut. Each use of marker m yields ai, m copies of part i per layer and wastes wm square yards of fabric in areas between the usable parts. Formulate an LP model to choose a minimum total waste cutting plan using the decision variable 1m = 1,c, 350; p = 60,c, 702 xm, p ! number of times marker pattern m is cut in a layup of p layers