The army is attempting to determine the optimal replacement age for a piece of field equipment. The equipment costs $280,000 to replace. The manufacturer will supply a rebate toward the next purchase that declines at a rate of 20 percent per year. Maintenance costs for the first year are estimated to be $1,000, and they increase roughly at the rate of 18 percent per year. Estimate the number of years that the army should hold the equipment before making a replacement.(Production and Operation Analysis by Steven Nahmias, 7th edition, pg.774 Problem # 24)

The army is attempting to determine the optimal replacement age for a piece of field equipment. The equipment costs $280,000 to replace. The manufacturer will supply a rebate toward the next purchase that declines at a rate of 20 percent per year. Maintenance costs for the first year are estimated to be $1,000, and they increase roughly at the rate of 18 percent per year. Estimate the number of years that the army should hold the equipment before making a replacement.(Production and Operation Analysis by Steven Nahmias, 7th edition, pg.774 Problem # 24)

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter10: Introduction To Simulation Modeling

Section: Chapter Questions

Problem 50P: Big Hit Video must determine how many copies of a new video to purchase. Assume that the companys...

See similar textbooks

Similar questions

You run a food bar in UCLA Ackerman, and you sell chocolate croissants for breakfast. Your daily demand for chocolate croissants is on average 50, with a standard deviation of 8. The unit cost of a croissant is $0.70, and you sell at a unit price of $3.00. The refrigerated chocolate croissant must be consumed within 7days (one week) after purchased from your supplier, so you dispose leftover inventory and purchase fresh croissants once every week. Assume the demand in each of the seven days is independently distributed. (The z-table for normal distribution is attached.) (a) What is the optimal weekly purchase quantity for the chocolate croissant? What is average inventory? A student leader, Mark, came to you one day and told you that Anderson School would hold a special event next Thursday morning, and there would be additional demand for the chocolate croissant on that day. Mark wants to reserve a certain amount of croissant from you and sell in the special event at the regular price.…
An airline company offers four fairs as shown in the table below. The demand distribution for each fare is normal with mean and standard deviation as given in the table. Find an estimate of the protection levels for the classes using the heuristic EMSR-a. Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
A piece of industrial machinery costs $48,000 to replace and has essentially no salvagevalue. Over the first five years of operation, maintenance costs amounted to $8,000. Ifthe maintenance cost rate is a linear function of time, what is the optimal age at whichto replace the machinery?
A borrower takes out a 30-year adjustable rate mortgage loan for $200,000 with monthly payments. The first two years of the loan have a "teaser" rate of 4 percent, after that the rate can reset with a 5 percent annual payment cap. On the reset date, the composite rate is 6 percent. Assume that the loan allows for negative amortization. What would be the outstanding balance on the loan at the end of Year 3? Multiple Choice $192,926 $190,074 $192,812 $192,337
This is the Littlefield Simulation. Please help me use the following analysis methods. Background Littlefield Technologies (LT) has developed another DSS product. This new model is manufactured using the same process as your previous assignment “Capacity Management at Littlefield Technologies” — neither the process sequence nor process time distributions have changed. Daily customer demand continues to be random, but this time there is no trend. Expected demand remains stable during the entire product life span. Marketing knows demand will end abruptly on Day 268 when a new model is released. LT will again: cease production, retool, and dispose of the obsolete inventory. Marketing discovered that customers would pay higher prices for shorter lead time contracts. LT has been reluctant to quote shorter lead times because current averages have been running longer than they would like. They are wondering if you might be able to shorten lead times and increase marginal revenues.…
Aventis is a major manufacturer of the flu (influenza) vaccine in the U.S. Aventis manufactures the vaccine before the flu season at a cost of $10 per dose (a “dose” is vaccine for one person). During the flu season Aventis sells doses to distributors and to health-care providers for $25. However, sometimes the flu season is mild and not all doses are sold — if a dose is not sold during the season then it is worthless and must be thrown out. Aventis anticipates demand for next flu season to follow a normal distrbituion with a mean of 60 million units and a standard deviation of 15 million units. Which one of the following is CORRECT? 1. Aventis should order more than 82.5 million units. 2. Aventis should order more than 60 million units. 3. Aventis should order more than 67.5 million units. 4. Aventis should order more than 75 million units.
A certain medical device will result in an estimated $15,000 reduction in hospital labor expenses during its first year of operation. Labor expenses (and thus savings) are projected to increase at a rate of 7% per year after the first year. Additional operating expenses for the device (maintenance, electric power, etc.) are $3,500 annually, and they increase by $250 per year there after (i.e., $3,750 in year two and so on). It is anticipated that the device will last for 10 years and will have no market value at that time. If theMARR is 10 % per year, how much can the hospital afford to pay for this device? Use an Excel spreadsheet in your solution.
For the basic age replacement model, consider a piece of equipment that costs$18,000 to replace. The total maintenance costs for five years of operation areestimated to be $2,400. Assuming a linear maintenance cost rate, find the value ofa and the optimal age at which the equipment should be replaced.
You are the manager of GearNet and must decide how many Internet hubs to produce to maximize your firm’s profit. GearNet and its only rival (NetWorks) sell dual-speed Internet hubs that are identical from consumers’ perspectives. The market price for hubs depends on the total quantity produced by the two firms. A survey reveals that the market price of the hubs depends on total market output as follows: Combined Hub Production of GearNet and NetWorks Market Price of Hubs (per unit) 500 units $120 750 units $100 1,000 units $90 GearNet and NetWorks each use labor, materials, and machines to produce output. GearNet purchases labor and materials on an as-needed basis; its machines were purchased three years ago and are being depreciated according to the straight-line method. GearNet’s accounting department has provided the following data about its unit production costs: Item GearNet’s Unit Cost for an Output of: 250 units…
CWD Electronics sells Televisions (TV), which it orders from the USA. Because of shipping and handling costs, each order must be for 5TVs. Because of the time it takes to receive an order, the company places an order every time the present stock drops to 5 TVs. It costs $50 to place anorder. It costs the company $500 in lost sales when a customer asks for a TV and the warehouse is out of stock. It costs $100 to keep each TV stored in the warehouse. If a customer cannot purchase a TV when it is requested, the customer will not wait until one comes in but will go to a competitor.The following probability distribution for demand for TV has been and the time required to receive an order once it is placed (lead time) has the following probability distribution: (Attached) The company has 3 TVs in stock. Orders are always received at the beginning of the week.Note that a lead time of 2 weeks imply that an order placed in week one will arrive in week 4. The time required to receive an order…
Product K was introduced to the market some time ago and is now about to enter the maturity stage of its life cycle. The maturity stage is expected to last for ten weeks. Each unit has a variable cost of $38 and takes one standard hour to produce.The Managing Director is unsure which of four possible prices the company should charge during the next ten weeks. The following table shows the results of some market research into the level of weekly demand at alternative prices:Selling price per unit ($) 100 85 80 75Weekly demand (units) 600 800 1,200 1,400REQUIREDWhich one of the four selling prices should be charged for Product K in order to maximize its contribution during its maturity stage?
Suppose that a firm can produce a part it uses for $520 per unit, with a fixed cost of $25,000. The company has been offered a contract from a supplier that allows it to purchase the part at a cost of $544 per unit, which includes transportation. The key outputs in the model are the difference in these costs and the decision that results in the lower cost. Assume that the production volume is uncertain. Suppose the manufacturer has enough data and information to estimate that the production volume will be normally distributed with a mean of 1,000 and a standard deviation of 85. Use a 100-trial Monte Carlo simulation to find the average cost difference and percent of trials that result in manufacturing or outsourcing as the best decision. Please include table showing both the cost difference and decision for each trial. Please include the Excel worksheet with all the details with your answer.