Trim loss answers that i got before that did not work and are wrong when entered : 8669/ 8380

Answers for Q3 that i have got before that did not work and are wrong when entered : 1736 / 1534

Problem 12-1 STAR Co. provides paper to smaller companies whose volumes 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 Number of: Pattern 12ft. 15ft. 30ft. Trim Loss 10 ft. 10 ft. 4 ft. 4 ft. 1 ft. Trim loss is the leftover paper from a pattern (e.g., for pattern 4, 3(12) + 4(15) + 0(30) = 96 feet used resulting in 100-96-4 foot of trim loss). Demands this week are 5,684 12-foot rolls, 1,715 15- foot rolls, and 3,475 30-foot rolls. Develop an all-integer model that will determine how many 100-foot rolls to cut into each of the five patterns in order to meet demand and minimize trim loss (leftover paper from a pattern) Optimal Solution: Pattern Number Rolls Used 0 0 1736 428 Trim Loss: 8669 feet