"Ruby runs a machine design shop that has 4 stages of process in succession. Stage i is cutting that takes 3 minutes and has 4 staff. Stage 2 is Sanding that takes 5 mins and has 5 staft. Stage 3 is polishing that takes 8 min and has 6 staff. Stage 4 is Quality inspection that takes 3 mins and has 2 staff. If Ruby's works 3days a week and 3 shifts of 8 hours each day, the weekly capacity of this company and bottleneck are O 5760 A Stage1 O 4320 and Stago Il O 2860 and Stage IV None of the above
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- Mack’s guitar fabrication shop produces low cost, highly durable guitars for beginners. Typically, out of the 100 guitars that begin production each month, only 80 percent are considered good enough to sell. The other 20 percent are scrapped due to quality problems that are identified after they have completed the production process. Each guitar sells for $300. Because some of the production process is automated, each guitar only requires 10 labor hours. Labor is paid at $10/hour, materials cost is $40/guitar, and overhead is $2,000. a) Calculate the labor and multifactor productivities. b) After some study, the operations manager recommends 3 options to improve the company’s multifactor productivity: (1) increase the sales price by 10 percent, (2) improve quality so that only 10 percent are defective, or (3) reduce labor, material, and overhead costs by 10 percent. Which option has the greatest impact on the multifactor productivity measure?Tailwind, Inc., produces high-quality but expensive training shoes for runners. The Tailwindshoe, which sells for $210, contains both gas- and liquid-filled compartments to provide morestability and better protection against knee, foot, and back injuries. Manufacturing the shoesrequires 10 separate tasks. There are 400 minutes available for manufacturing the shoes inthe plant each day. Daily demand is 60. The information for the tasks is as follows: Task Performance Time (In minutes) Task Must Follow This task A 1 ___ B 3 A C 2 B D 4 B E 1 C.D F 3 A G 2 F H 5 G I 1 E,H J 3/25 I 1. What is the theoretical minimum number of work stations required to satisfy this output rate? 2. Allocate the tasks to work stations taking into consideration the precedence requirements and usingthe LOT rule to break ties between feasible tasks.Tailwind, Inc., produces high-quality but expensive training shoes for runners. The Tailwind shoe, which sells for $210, contains both gas- and liquid-filled compartments to provide more stability and better protection against knee, foot, and back injuries. Manufacturing the shoes requires 10 separate tasks. There are 400minutes available for manufacturing the shoes in the plant each day. Daily demand is 62.The information for the tasks is as follows: Task Performance Time (mins) Predecessors A 1 − B 3 A C 1 B D 4 B E 1 C, D F 3 A G 2 F H 5 G I 3 E, H J 2 I a-b) The correct precedence relationship with one of the possible assignments of tasks using the "ranked positionedweight" to workstations is shown in Fig 1, 2 or 3 c) The efficiency of the assembly line with 5 workstations shown in the figure…
- Formtech Inc. produces transformers. Each order is custom designed and manufactured for the customer. Each order goes through 3 phases: Transformer Design, which takes 4 weeks. Procurement, which has a lead time of 8 weeks. Assembly and Testing, which takes 4 weeks The design group can handle only 4 projects at any given time. The other groups are not capacity constrained. How much total work-in-process (number of projects started but not yet completed) does the company typically have? (Hint: Little's Law)In order to produce 1000 units of X in a week units X is scheduled weekly for Operation B (due to 5% scrap ratio) units X is scheduled weekly for Operation A (due to 2% scrap ratio) Based on your answer in part a, find the number of machines required to produce 1000 units of X per week. The total time required to perform Operation B = minutes per week The total time required to perform Operation A = minutes per week H= Available Time in a week = minutes /week Thus FA = . FB = . Since both of the operations A and B are performed on the same machine machines are requiredYost-Perry Industries (YPI) manufactures a mix of affordable guitars (A, B, C) that are fabricated and assembled at four different processing stations (W, X, Y, Z). The operation is a batch process with small setup times that can be considered negligible. The product information (price, weekly demand, and processing times) and process sequences are shown in Figure. Raw materials and purchased parts (shown as a per-unit consumption rate) are represented by inverted triangles. YPI is able to make and sell up to the limit of its demand per week with no penalties incurred for not meeting the full demand. Each workstation is staffed by one highly skilled worker who is dedicated to work on that workstation alone and is paid $15 per hour. The plant operates one 8-hour shift per day and operates on a 5-day work week (i.e., 40 hours of production per person per week). Overhead costs are $9,000/week. Which of the four workstations, W, X, Y, or Z, has the highest aggregate workload, and thus…
- Tailwind, Inc., produces high-quality but expensive training shoes for runners. The Tailwind shoe, which sells for $210, contains both gas- and liquid-filled compartments to provide more stability and better protection against knee, foot, and back injuries. Manufacturing the shoes requires 10 separate tasks. There are 400 minutes available for manufacturing the shoes in the plant each day. Daily demand is 64. The information for the tasks is as follows: Task Performance Time (mins) Predecessors A 1 − B 3 A C 1 B D 4 B E 1 C, D F 3 A G 2 F H 5 G I 1 E, H J 3 I a) The efficiency of the assembly line with 5 workstations shown in the figure chosen above=(enter your response as a percentage rounded to one decimal place). b) The idle time for the assembly line per cycle =minute(s) (enter your…CarCity is a big retailer for car parts and accessories. The store stocks different types and sizes of car tire. One of the best selling tires is the Tiger Model R125, which is currently purchased from a factory in Indonesia. An analysis of the purchasing operation shows that approximately 3 labor hours are required to process a purchase order, regardless of the quantity purchased. Salaries in the purchasing Department average OMR 12 per hour, including employee benefits. In addition, a detailed analysis of 15 previous purchase orders showed that OMR 132 was spent on telephone, paper, and other consumables directly related to the ordering process . Shipping cost from Indonesia is OMR 230 for a container. A container has a capacity of 800 tires. The lead time for shipments from Indonesia is 15 days. Finally, CarCity’s financial analysts established a holding cost of 20% for this type of tire. The annual demand for the R125 tire is constant at a rate of 8400 units. The store purchases…Up, Up, and Away is a producer of kites and wind socks.Relevant data on a bottleneck operation in the shop for theupcoming fiscal year are given in the following table:Item Kites Wind SocksDemand forecast 30,000 units/year 12,000 units/yearLot size 20 units 70 unitsStandard processing time 0.3 hour/unit 1.0 hour/unitStandard setup time 3.0 hours/lot 4.0 hours/lotThe shop works two shifts per day, 8 hours per shift, 200 daysper year. Currently, the company operates four machines,and desires a 25 percent capacity cushion. How many ma-chines should be purchased to meet the upcoming year’s de-mand without resorting to any short-term capacity solutions?
- CarCity is a big retailer for car parts and accessories. The store stocks different types and sizes of car tire. One of the best selling tires is the Tiger Model R125, which is currently purchased from a factory in Indonesia. An analysis of the purchasing operation shows that approximately 2 labor hours are required to process a purchase order, regardless of the quantity purchased. Salaries in the purchasing Department average OMR 15 per hour, including employee benefits. In addition, a detailed analysis of 20 previous purchase orders showed that OMR 132 was spent on telephone, paper, and other consumables directly related to the ordering process (see guidelines above to obtain value of 132). Shipping cost from Indonesia is OMR 250 for a container. A container has a capacity of 800 tires. The lead time for shipments from Indonesia is 15 days. Finally, CarCity’s financial analysts established a holding cost of 30% for this type of tire. The annual demand for the R125 tire is constant at…CarCity is a big retailer for car parts and accessories. The store stocks different types and sizes of car tire. One of the best selling tires is the Tiger Model R125, which is currently purchased from a factory in Indonesia. An analysis of the purchasing operation shows that approximately 2 labor hours are required to process a purchase order, regardless of the quantity purchased. Salaries in the purchasing Department average OMR 15 per hour, including employee benefits. In addition, a detailed analysis of 20 previous purchase orders showed that OMR 132 was spent on telephone, paper, and other consumables directly related to the ordering process (see guidelines above to obtain value of 132). Shipping cost from Indonesia is OMR 250 for a container. A container has a capacity of 800 tires. The lead time for shipments from Indonesia is 15 days. Finally, CarCity’s financial analysts established a holding cost of 30% for this type of tire. The annual demand for the R125 tire is constant at…A furniture factory makes two types of wooden tables,large and small. See the flowchart below.SetupTime,MinutesRun Timeper Piece,MinutesCapacity,Piecesper HourWood cutting 30 5 15Make four legs 60 10 10Make tops 60 12 8Finish the wood 20 8 12Assemble and ship 20 17 14 Small tables are made in batches of 100, and large tables are made in batches of 50. A batch includes a fixed setup time for the entire batch at each process step and a run time for each piece in the batch. Both large and small tables have the same processing times. The capacities of each process step are given, and apply to production of either type of table, as shown in the flowchart.a. What is the capacity of the system, and what is the bottleneck?b. What are the throughput times for batches of large and small tables?c. When producing at a rate of six small tables per hour on average, how many tables will be in the system?