STAR Co. provides paper to smaller companies with volumes that are not large enough to warrant dealing directly with the paper mill. STAR receives 100-feet-wide paper roils from the mill and cuts the roils into smaller rolls of widths 12, 15, and 30 feet. The demands for these widths vary from week to week. The following cutting patterns have been established. Pattern Number 1 4 Min 2 3 4 12-ft 15-ft 30-ft Trim Loss (ft) 5 0 0 0 3 6 0 7 0 0 3 0 1 Trim loss is the leftover paper from a pattern (e.g., for pattern 4, 3(12) + 0(15) + 2(30) 96 feet used results in 100-96-4 foot of trim loss). Orders in hand for the coming week are 5,660 12- foot rolls, 1,690 15-foot rolls, and 3,340 30-foot rolls. Any of the three types of rolls produced in excess of the orders in hand will be sold on the open market at the selling price. No inventory is held. 0 2 10 0 10 4 4 1 (0) Formulate an integer programming model that will determine how many 100-foot rolls to cut into each of the five patterns in order to minimize trim loss. (Let P-number of rolls cut into pattern i, for / 1, 2, 3, 4, 5)

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(b) Solve the model formulated in part (a). What is the minimal amount of trim loss (in ft)?
ft
How many of each pattern should be used?
Pattern 1
Pattern 2
Pattern 3
Pattern 4
Pattern 5
rolls
rolls
I rolls
rolls
rolls:
How many of each type of roll will be sold on the open market?
12-ft
15-ft
30-ft
rolls
rolls
rolls
Transcribed Image Text:(b) Solve the model formulated in part (a). What is the minimal amount of trim loss (in ft)? ft How many of each pattern should be used? Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 rolls rolls I rolls rolls rolls: How many of each type of roll will be sold on the open market? 12-ft 15-ft 30-ft rolls rolls rolls
STAR Co. provides paper to smaller companies with volumes that are not large enough to warrant dealing directly with the paper mill. STAR receives 100-feet-wide paper rolls from the mill and cuts
the rolls into smaller rolls of widths 12, 15, and 30 feet. The demands for these widths vary from week to week. The following cutting patterns have been established.
12-ft 15-ft 30-ft Trim Loss (ft)
Min
s.t.
12-f
Pattern Number
15-1
1
30-1
2
3
4
5
0
D
8
3
7
6
0
0
0
1
0
3
0
2
0
10
Trim loss is the leftover paper from a pattern (e.g., for pattern 4, 3(12)+ 0(15) + 2(30) 96 feet used results in 100-96-4 foot of trim loss). Orders in hand for the coming week are 5,660 12-
foot rolls, 1,690 15-foot rolls, and 3,340 30-foot rolls. Any of the three types of rolls produced in excess of the orders in hand will be sold on the open market at the selling price. No inventory is held.
10
(a) Formulate an integer programming model that will determine how many 100-foot rolls to cut into each of the five patterns in order to minimize trim loss. (Let
P-number of rolls cut into pattern i, for / 1, 2, 3, 4, 5)
4
4
1
not what is the minimal amount of trim loss (in n)
Transcribed Image Text:STAR Co. provides paper to smaller companies with volumes that are not large enough to warrant dealing directly with the paper mill. STAR receives 100-feet-wide paper rolls from the mill and cuts the rolls into smaller rolls of widths 12, 15, and 30 feet. The demands for these widths vary from week to week. The following cutting patterns have been established. 12-ft 15-ft 30-ft Trim Loss (ft) Min s.t. 12-f Pattern Number 15-1 1 30-1 2 3 4 5 0 D 8 3 7 6 0 0 0 1 0 3 0 2 0 10 Trim loss is the leftover paper from a pattern (e.g., for pattern 4, 3(12)+ 0(15) + 2(30) 96 feet used results in 100-96-4 foot of trim loss). Orders in hand for the coming week are 5,660 12- foot rolls, 1,690 15-foot rolls, and 3,340 30-foot rolls. Any of the three types of rolls produced in excess of the orders in hand will be sold on the open market at the selling price. No inventory is held. 10 (a) Formulate an integer programming model that will determine how many 100-foot rolls to cut into each of the five patterns in order to minimize trim loss. (Let P-number of rolls cut into pattern i, for / 1, 2, 3, 4, 5) 4 4 1 not what is the minimal amount of trim loss (in n)
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