same large vat,which must be cleaned prior to switching flavors.One day is required for the cleaning process. At the current time they have the following outstanding orders of ice cream: Flavor Order Size(gallons) Due Date Vanilla 385 3 Chocolate 440 8 Strawberry 200 6 Peanut fudge 180 12 It takes one day to produce the ice cream and a maximum of 100 gallons can be produced at one time.Cleaning is required only when flavors are switched.The production for one flavor will be completed prior to beginning production for another flavor.Cleaning is always started at the beginning of a day. Treating each ice cream flavor as a different job,find the following: a.The sequence in which the ice cream flavors should be produced in order to minimize the mean flow time for all of the flavors. b.The optimal sequence to produce the flavors in order to minimize the number of flavors that are late. 4.CH3 Leather-All produces a line of handmade leather products.At the present time,the company is producing only belts,handbags,and attache cases.The predicted demand for these three types of items over a six-month planning horizon is as follows: Month Number of Belts Handbags Attache Cases Working Days 22 2,500 1,250 240 2 20 2,800 680 380 3 19 2,000 1,625 110 4 24 3,400 745 75 21 3,000 835 126 6 17 1,600 375 45 The belts require an average of two hours to produce,the handbags three hours,and the attache case six hours.All the works have the skill to work on any item.Leather-All has 46 employees who each has a share in the firm and can not be fired.There are an additional 30 locals that are available and can be hired for short periods at higher cost.Regular employees earn $8.50 per hour on regular time and $14.00 per hour on overtime.Regular time comprises a seven-hour workday,and the regular employee will work as much overtime as is available.The additional workers are hired for $11.00 per hour and are kept on the payroll for at least one full month.Costs of hiring and firing are negligible. Because of the competitive nature of the industry,Leather-All does not want to incur any demand back orders. a.Using worker hours anan aggregate measure of production,convert the forecasted demands to demands in terms of aggregate units. b.What would be the size of the workforce needed to satisfy the demand for the coming six months on regular time only?Would it be to the company's advantage to bring the A卷总3页第页A 卷 总 3 页 第 页 same large vat, which must be cleaned prior to switching flavors. One day is required for the cleaning process. At the current time they have the following outstanding orders of ice cream: Flavor Order Size(gallons) Due Date Vanilla 385 3 Chocolate 440 8 Strawberry 200 6 Peanut fudge 180 12 It takes one day to produce the ice cream and a maximum of 100 gallons can be produced at one time. Cleaning is required only when flavors are switched. The production for one flavor will be completed prior to beginning production for another flavor. Cleaning is always started at the beginning of a day. Treating each ice cream flavor as a different job, find the following: a. The sequence in which the ice cream flavors should be produced in order to minimize the mean flow time for all of the flavors. b. The optimal sequence to produce the flavors in order to minimize the number of flavors that are late. 4. CH3 Leather-All produces a line of handmade leather products. At the present time, the company is producing only belts, handbags, and attaché cases. The predicted demand for these three types of items over a six-month planning horizon is as follows: Month Number of Working Days Belts Handbags Attaché Cases 1 22 2,500 1,250 240 2 20 2,800 680 380 3 19 2,000 1,625 110 4 24 3,400 745 75 5 21 3,000 835 126 6 17 1,600 375 45 The belts require an average of two hours to produce, the handbags three hours, and the attaché case six hours. All the works have the skill to work on any item. Leather-All has 46 employees who each has a share in the firm and can not be fired. There are an additional 30 locals that are available and can be hired for short periods at higher cost. Regular employees earn $8.50 per hour on regular time and $14.00 per hour on overtime. Regular time comprises a seven-hour workday, and the regular employee will work as much overtime as is available. The additional workers are hired for $11.00 per hour and are kept on the payroll for at least one full month. Costs of hiring and firing are negligible. Because of the competitive nature of the industry, Leather-All does not want to incur any demand back orders. a. Using worker hours an an aggregate measure of production, convert the forecasted demands to demands in terms of aggregate units. b. What would be the size of the workforce needed to satisfy the demand for the coming six months on regular time only? Would it be to the company’s advantage to bring the