Answers to Lab 1
Chapter 11: Problems 7 and 9 (Pages 504-505) 7. a. No backlogs are allowed | Period | Mar. | Apr. | May | Jun. | July | Aug. | Sep. | Total | | Forecast | 50 | 44 | 55 | 60 | 50 | 40 | 51 | 350 | | Output | | | | | | | | | | Regular | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 280 | | Overtime | 8 | 8 | 8 | 8 | 8 | 3 | 8 | 51 | | Subcontract | 2 | 0 | 3 | 12 | 2 | 0 | 0 | 19 | | Output - Forecast | 0 | 4 | –4 | 0 | 0 | 3 | –3 | | | Inventory | | | | | | | | | | Beginning | 0 | 0 | 4 | 0 | 0 | 0 | 3 | | | Ending | 0 | 4 | 0 | 0 | 0 | 3 | 0 | | | Average | 0 | 2 | 2 | 0 | 0 …show more content…
| 1.5 | 1.5 | 7 | | Backlog | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | Costs: | | | | | | | | | | Regular | 3,200 | 3,200 | 3,200 | 3,200 | 3,200 | 3,200 | 3,200 | 22,400 | | Overtime | 960 | 960 | 960 | 960 | 960 | 360 | 960 | 6,120 | | Subcontract | 280 | 0 | 420 | 1,680 | 280 | 0 | 0 | 2,660 | | Inventory | 0 | 20 | 20 | 0 | 0 | 15 | 15 | 70 | | Total | 4,440 | 4,180 | 4,600 | 5,840 | 4,440 | 3,575 | 4,175 | 31,250 |
b. Level strategy | Period | Mar. | Apr. | May | Jun. | July | Aug. | Sep. | Total | | Forecast | 50 | 44 | 55 | 60 | 50 | 40 | 51 | 350 | | Output | | | | | | | | | | Regular | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 280 | | Overtime | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 56 | | Subcontract | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 14 | | Output - Forecast | 0 | 6 | –5 | –10 | 0 | 10 | –1 | | | Inventory | | | | | | | | | | Beginning | 0 | 0 | 6 | 1 | 0 | 0 | 1 | | | Ending | 0 | 6 | 1 | 0 | 0 | 1 | 0 | | | Average | 0 | 3 | 3.5 | .5 | 0 | .5 | .5 | 8 | | Backlog | 0 | 0 | 0 | 9 | 9 | 0 | 0 | 18 | | Costs: | | | | | | | | | | Regular | 3,200 | 3,200 | 3,200 | 3,200 | 3,200 | 3,200 | 3,200 | 22,400 | | Overtime | 960 | 960 | 960 | 960 | 960 | 960 | 960 | 6,720 | | Subcontract | 280 | 280 | 280 | 280 | 280 | 280 | 280 | 1,960 | | Inventory | | 30 | 35 | 5 | 0 | 5 | 5 | 80 | | Backlog | | | | 180 | 180 | | | 360 | | Total | 4,440 | 4,470 | 4,475 | 4,625 | 4,620 | 4,445 | 4,445 | 31,520 |
9.
| Period | 1 | 2 | 3 | 4 | 5 | 6 | Total | | Forecast | 160 | 150 | 160 | 180 | 170 | 140 | 960 | | Output | | | | | | | | | Regular | 150 | 150 | 150 | 150 | 160 | 130 | 890 | | Overtime | 10 | 10 | 0 | 10 | 10 | 10 | 50 | | Subcontract | 0 | 0 | 10 | 10 | 0 | 0 | 20 | | Output- Forecast | 0 | 10 | 0 | –10 | 0 | 0 |
| | Inventory | | | | | | | | | Beginning | 0 | 0 | 10 | 10 | 0 | 0 | | | Ending | 0 | 10 | 10 | 0 | 0 | 0 | | | Average | 0 | 5 | 10 | 5 | 0 | 0 | 20 | | Backlog | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | Costs: | | | | | | | | | Regular | 7,500 | 7,500 | 7,500 | 7,500 | 8,000 | 6,500 | 44,500 | | Overtime | 750 | 750 | 0 | 750 | 750 | 750 | 3,750 | | Subcontract | 0 | 0 | 800 | 800 | 0 | 0 | 1,600 | | Inventory | | 20 | 40 | 20 | | | 80 | | Backlog | 0 | 0 | 0 | 0 | 0 | 0 | | | Total | 8,250 | 8,270 | 8,340 | 9,070 | 8,750 | 7,250 | 49,930 |