3. The Energetic Company needs to make plans for the energy systems for a new building. The energy needs in the building fall into three categories: (1) electricity, (2) heating water, and (3) heating space in the building. The daily requirements for these three categories (all measured in the same units) are The three possible sources of energy to meet these needs are electricity, natural gas, and a solar heating unit that can be installed on the roof. The size of the roof limits the largest possible solar heater to 30 units. Electricity can supply up to 20 units and natural gas can supply up to 15 units . Electricity needs can be met only by purchasing electricity (at a cost of $50 per unit). Both other energy needs can be met by any source or combination of sources. The unit costs are
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- Can you help me with these three review questions A sports manufacturer produces skateboards and rollerblades. The same wheels are used for both products. For the next week, the master production schedule for skateboards shows a need for 147 units, while the master production schedule for rollerblades shows a need of 149 pairs. 4 wheels are required to manufacture a skateboard, and 8 wheels are required to manufacture one pair of rollerblades. What are the gross requirements for wheels to meet the requirements on the master production schedules for the next week?A method of estimating future demand usedfor decision making in order to set reasonable targets and control orlimit uncertainties or risks.5. The manager of a fast-food restaurant featuring hamburgers is adding salads to the menu. If they choose to include a salad bar (i.e., the MAKE option), it will cost $14,000 in annual fixed costs for the leased equipment and added employee, and $1 per salad variable cost. If they choose to have pre-made salads (i.e., the BUY option), it will cost $3 per salad. The manager expects to sell 7,500 salads per year. What is the make or buy quantity (i.e., the breakeven point between making vs. buying)?
- Tom Glass forecasts electrical demand for the FlatlandsPublic Power District (FPPD). The FPPD wants to take itsComstock power plant out of service for maintenance whendemand is expected to be low. After shutdown, performingmaintenance and getting the plant back on line takes twoweeks. The utility has enough other generating capacity tosatisfy 1,550 megawatts (MW) of demand while Comstockis out of service. Table 8.5 shows weekly peak demands(in MW) for the past several autumns. When next in year 6should the Comstock plant be scheduled for maintenance?Formulate an LP model for the following problems.1. A furniture company makes two products: book shelves selling for ₱5,000 and cabinetsselling for ₱8,000. The direct cost per unit is ₱3,000 and ₱4,000, respectively. Thecompany has no difficulty in selling all the products it can manufacture. The assemblydepartment has 60 hours available per week and the finishing department can handleup to 48 hours of work per week. Manufacturing one book shelf requires 4 hours inassembly and 2 hours in finishing. Each cabinet requires 2 hours in assembly and 4hours in finishing. How can the management allocate the limited man-hour of the twodepartments in a way which will secure the largest possible net return?How do non-linear system models differ from linear models, and what are the challenges associated with analyzing and controlling them?
- 18. The purpose of a Property Management System is to: A) manage the entire lodging property operation by keeping all of the information regarding all departments in one computer system. B) manage only the guestrooms portion of a lodging property operation by keeping the information regarding the front desk and housekeeping in one computer system C) manage the food and beverage portion of a lodging property business by keeping the information regarding the restaurant and room service in one computer system. D) assist in developing marketing and promotion packages.4. The seven-person maintenance function at a hospital performs both preventive and corrective maintenance on hundreds of items each month, All the workers are scheduled for 40 hours per week and there are four weeks in a month. It is the goal of the maintenance department to achieve 90% utilization with a mix of two-thirds preventive maintenance and one-third corrective maintenance, How many hours each month are spent performing preventive maintenance if they achieve their 90% utilization and correct/preventive mix targets?Dave F letcher, the general manager of NorthCarolina Engineering Corporation (NCEC), thinks that his firm'sengineering services contracted to highway construction firms aredirectly rela ted to the volume of highway construction businesscontracted with companies in his geographic area. He wondersif thjs is really so, and if it is, can this information help him planhjs operations better by forecasting the quantity of his engineeringservices required by construction firms in each quarter of theyear? The following table presents the sales of his services andtotal amounts of contracts for hjghway construction over the pasteight quarters:…
- Kpogas produces chairs and tables. Using economic forecast for the next month, Kpogas’ marketing manager has judged that during that period, it will be possible to sell as many chairs or tables as the company can produce. Management must now recommend a production target for next month. That is, how many chairs and tables should be produced if Kpogas’ management wishes to maximize next month’s profit contribution? Making this decision requires a consideration of the following key factors: ● Kpogas’s unit contribution margin is GH¢ 5,000 on each chair that is sold and GH¢ 4,000 on each table that is sold. ● Each product is put through Kpogas’s machining operations in both department A and department B. For next month’s production, the two departments have 150 and 160 hours available time, respectively. Each chair produced uses 10 hours of machining in department A and 20 hours of machining in department B, whereas each table produced uses 15 hours of machining in department A and 10…Salt & Pepper & Co (Salt & Pepper) is a firm of Chartered Certified Accountants which has seen its revenue decline steadily over the past few years. The firm is looking to increase its revenue and client base and so has developed a new advertising strategywhere it has guaranteed that its audits will minimise disruption to companies as they will not last longer than two weeks. In addition, Salt & Pepper has offered all new audit clients a free accounts preparation service for the first year of the engagement, as it is believed that time spent on the audit will be reduced if the firm has produced the financial statements. The firm is seeking to reduce audit costs and has therefore decided not to update the engagement letters of existing clients, on the basis that these letters do not tend to change much on a yearly basis. One of Salt & Pepper’s existing clients has proposed that this year’s audit fee should be based on a percentage of their final pre-tax profit. The…What are the principal types of modeling techniques that apply to the task oflogistics/supply chain network design and facility location? What are the strengthsand limitations of each?