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- During an eight-hour shift, 750 non-defective parts are desired as a result of a manufacturing operation. The default operation time is 15 minutes. As the operators of machine are inexperienced, the actual time they take to perform the operation is 20 minutes, and, on average, a fifth of the parts that start to be manufactured are lost. Assuming that each one of the machines used in this operation will not be available for one hour in each shift, determine the number of machines needed.The ore of a gold mine in the Mountain Province contains, on the average, 2 gram of gold perton. One method of processing cost ₱1,800.00 per ton and recovers 90% of the gold, whileanother method cost only ₱1,400.00 per ton and recovers 85% of the gold. If the gold can besold at ₱8,000.00 per gram, which method is better and by how much?Consider an E2/M/1/4 model with the arrival rate of 3 jobs per hour and a service rate of 4 jobs per hour. Note that this system has a capacity of 4 jobs Compute the steady-state probabilities and the system performance measures of utilization, CTs, WIPs, and throughput.
- The ore of a gold mine in the province contains, on average, 0,5 ounce of gold per ton Method A of processing costs 150Photon and recovers 93% of the gold, while Method B costs only 120Php/ton and recovers 81% of the gold. If gold can be sold at 1,200/ounce, which method is better and by how much?Find solution using Two-Phase method MIN z = 5x1 + 2x2 + 10x3 subject to x1 - x3 <= 10 x2 + x3 >= 10 and x1,x2,x3 >= 0- Mom-and-Pop’s Grocery Store has a small adjacent parking lot with three parkingspaces reserved for the store’s customers. During store hours, cars enter the lot and useone of the spaces at a mean rate of 2 per hour. For n = 0, 1, 2, 3, the probability Pn that exactly n spaces currently are being used is P0 = 0.1, P1 = 0.2, P2 = 0.4, P3 = 0.3. - Midtown Bank always has two tellers on duty. The Customers arrive at checkouts at an average rate of 40 per hour. A cashier requires an average of 2 minutes to serve a customer. When both cashiers are busy, arriving customer joins a queue and wait to be served. From experience it is known that customers They wait in line for an average of 1 minute before going to the checkout. a) Describe why this is a waiting line system Mention the queuing model that can be implemented for the analysis (notation of Kendall) and why that model was chosen
- Design capacity is the ability of the company to produce the quantity of goods and services within a particular period of time when the company have best condition to produce and when the company have unlimited resources. These resource's includes- Men, Machinery, Material etc. It shows the maximum capacity of the company to produce. Effective capacity refers to the ability of the company to produce maximum quantity within a particular period of time to achieve in current production condition and current resources. It shows the real outcome capacity of the firm when the company produce within their own current condition of their production. In design capacity it is assume that the company will produce in best and ideal condition to produce goods and services while in Effective capacity it is assume that company will produce in current operating conditions. In design capacity it is assume that the company have unlimited resource's. It means these resource's include:- Men,…Design capacity is the ability of the company to produce the quantity of goods and services within a particular period of time when the company have best condition to produce and when the company have unlimited resources. These resource's includes- Men, Machinery, Material etc. It shows the maximum capacity of the company to produce. Effective capacity refers to the ability of the company to produce maximum quantity within a particular period of time to achieve in current production condition and current resources. It shows the real outcome capacity of the firm when the company produce within their own current condition of their production. Question Why is the capacity design important?The school of business has 3 fax machines. The toner in each machine needs to be changed after about 5 hours of use. There is one unit secretary who is responsible for the fax machine maintenance. It takes him 15 minutes to replace the toner cartridge. What is the probability the system is empty?
- Laredo Leather Company’s production manager, Jack Murray, has been under pressure from the company president to reduce the cost of conversion. In spite of several attempts to reduce conversion costs, they have remained more or less constant. Now Murray is faced with an upcoming meeting with the company president, at which he will have to explain why he has failed to reduce conversion costs. Murray has approached his friend, Jeff Daley, who is the corporate controller, with the following request: “Jeff, I’m under pressure to reduce costs in the production process. There is no way to reduce material cost, so I’ve got to get the conversion costs down. If I can show just a little progress in next week’s meeting with the president, then I can buy a little time to try some other cost-cutting measures I’ve been considering. I want you to do me a favor. If we raise the estimate of the percentage of completion of October’s inventory to 60 percent, that will increase the number of equivalent…At a small but growing airport, the local airline company is purchasing a new tractor for a tractor-trailer train to bring luggage to and from the airplanes. A new mechanized luggage system will be installed in 3 years, so the tractor will not be needed after that. However, because it will receive heavy use, so that the running and maintenance costs will increase rapidly as the tractor ages, it may still be more economical to replace the tractor after 1 or 2 years. The following table gives the total net discounted cost associated with purchasing a tractor (purchase price minus trade-in allowance, plus running and maintenance costs) at the end of year i and trading it in at the end of year j (where year O is now). i 012 1 $13,000 j 2 $28,000 $17,000 3 $48,000 $33,000 $20,000 The problem is to determine at what times (if any) the tractor should be replaced to minimize the total cost for the tractors over 3 years. (a) Formulate this problem as a minimum cost flow problem by showing the…Adele Weiss manages the campus flower shop. Flowers must be ordered three days in advance from her supplier in Mexico. Although Valentine’s Day is fast approaching, sales are almost entirely last-minute, impulse purchases. Advance sales are so small that Weiss has no way to estimate the probability of low (25 dozen), medium (60 dozen), or high (130 dozen) demand for red roses on the big day. She buys roses for $15 per dozen and sells them for $40 per dozen. Construct a payoff table. Which decision is indicated by each of the following decision criteria?a. Maximinb. Maximaxc. Laplaced. Minimax regret