Exercises 29 through 32 refer to a project consisting of 11 tasks (A through K) with the following processing times (in hours):
a. A schedule with
b. Explain why a schedule with
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- Terra Mesa Manufacturing uses a job order cost system to account for its production of specialty patio furniture. At the beginning of June, Terra Mesa had one job in Work in Process, job A75. Management has chosen direct labor cost as its activity base. The costs incurred to date on job A75 are as follows: Direct materials $8260 Direct labor 10500 Overhead 13125 During June, Terra Mesa added the following costs for direct materials and direct labor to job A75: Direct materials $2630 Direct labor 4620 Job A75 was competed on June 30. What is the cost of job A75? $26010 $39135 $44910 $42831arrow_forwardA car rental agency in a major city has a total of 3500 cars that it rents from three locations: Metropolis Airport, downtown, and the smaller City Airport. Some weekly rental and return patterns are shown in the table (note that Airport means Metropolis Airport). Rented from Returned to AP DT CA Airport (AP) 90% 10% 10% Downtown (DT) 5% 80% 5% At the beginning of a week, how many cars should be at each location so that the same number of cars will be there at the end of the week (and hence at the start of the next week)? AP cars DT cars CA carsarrow_forwardAn industrial system has two industries with the following input requirements.arrow_forward
- The dependencies between the 10 activities listed in the table above are as follows:• The project starts with two activities—A, and B—which can be done concurrently.• When activity A is finished, activity C can start• When activity B is finished, activities D and E can start• When both activities C and D are finished, activity F can start• When activity E is finished, activity G can start• When activity F is finished, activity H can start• When both activities G and H are finished, activity I can start• When activity G is finished, activity J can start• The project is complete when activities I and J are finished Questions1. Organize the information above in an activity precedence table showing the activity, precedent and duration (calculated using the PERT weighted average formula and round to the nearest integer).2. Draw an AON network diagram and calculate its early start, early finish, late start and late finish times, floats (Free and total) for each activity. Make sure you…arrow_forwardSuppose your final grade in this class is based on the following system. Test Average 45% Final Exam 20% Homework 25% Class Participation 15% Given the grades listed below, what grade would you need to earn on the final exam to earn a final grade average of at least an 85? Show all of your work. Test grades {75, 82, 90, 76} Homework {90, 100, 75, 87, 63} Class Participation {90}Single choice.arrow_forwardA project has been defined to contain the following list of activities along with their required times for completion. A-Draw activity bar chart B-Draw Staff allocation table (consider the staff name by yourself, hire 6 staff members, 1 for requirement collection, 1 for analysis activities, 1 for design activities, 1 for program, 1 for test & document and 1 for software installation)arrow_forward
- A T-shirt company has three machines, I, II, and III, which can be used to produce two types of T-shirts, standard design and custom design. The following table shows the number of minutes required on each machine to produce the designs. Machine I Machine II Machine III Standard 1 1 1 Custom 1 4 5 For efficient use of equipment, the company uses machine I at least 240 minutes per day, machine II at least 540 minutes per day, and machine III at least 1000 minutes per day. Each standard T-shirt costs $8, and each custom T-shirt costs $9. Find the number of each type of T-shirt that should be produced to minimize costs. (For each answer, enter an exact number.) standard design : custom design : cost (in dollars) : $arrow_forwardTCC also makes high-end dorm room door locks. The most recent order has been for 1400 door lock units for the new college dormitory. The sales and production departments must work together to determine delivery schedules. Each lock unit consists of three components: the knob and face plate, the actual lock itself, and a set of two keys. Although the processes used in the manufacture of the three components vary, there are three areas where the production manager is concerned about the availability of resources. These three areas, their usage by the three components, and their availability are detailed in the table. Resource Knob and Plate Lock Keys (set of 2) Available at TCC Nickel Plating 13 5 2 17,000 units Machining 19 20 20 39,000 minutes Finishing 16 5 2 14,000 minutes A quick look at the amounts available confirms that TCC does not have the resources to fill this contract. A subcontractor, who can make an…arrow_forwardJensen Tire & Auto is in the process of deciding whether to purchase a maintenance contract for its new computerized wheel alignment and balancing machine. Managers feel that maintenance expense is related to usage of the machine, and they have collected the following information on weekly usage of the machine (in hours) and annual maintenance expense (in hundreds of dollars) from 10 other companies that own the machine.Company Weekly Usage(hours) Annual maintenance Expense(hundreds of dollars)A 13 17.0B 10 22.0C 20 30.0D 28 37.0E 32 47.0F 17…arrow_forward
- Larkin Industries manufactures several lines of decorative and functional metal items. The most recent order has been for 1200 door lock units for an apartment complex developer. The sales and production departments must work together to determine delivery schedules. Each lock unit consists of three components: the knob and face plate, the actual lock itself, and a set of two keys. Although the processes used in the manufacture of the three components vary, there are three areas where the production manager is concerned about the availability of resources. These three areas, their usage by the three components, and their availability are detailed in the table. Resource Knob and Plate Lock Key (each) Available Brass Alloy 12 5 1 15000 units Machining 18 20 10 36000 minutes Finishing 15 5 1 12000 minutes A quick look at the amounts available confirms that Larkin does not have the resources to fill this contract. A subcontractor, who can make an unlimited number of each of the three…arrow_forwardIt is often said that the economy of Arizona depends on the “Five C’s”: Copper, Cattle, Cotton, Citrus, andClimate. Assume a (highly simplified) model of the Arizona Economy that depends only on C1, C2, C3, C4,and C5, which represent the number of economic units (pennies, pounds, etc) purchased of each of the FiveC’s, respectively. Further assume that the Utility, or Economic Value (which is different from DollarValue), can be described by the function:U(C1, C2, C3, C4, C5) = C1∙C2∙C3∙C4∙C5As a mathematical function, does U have a maximum or minimum value? What values of Ci correspond tothe minimum value of U? What values of Ci correspond to the maximum value of U? Do these values of Cimake sense from an economic standpoint?arrow_forwardA line of LRT with five (5) stations will be constructed in a city. A forecast passenger demand is given below: Depart Station Boarding Station 1 2 3 4 5 1 0 1600 10000 2000 250 2 230 0 11000 2071 230 3 60 1400 0 1500 170 4 250 1700 10400 0 250 5 300 1900 12000 2500 0 (a) Compute the number of passengers between each pair of the stations for both directions.(b) In this LRT project, headway must not be less than 120 seconds and must not be greater than 300 seconds. All stations are designed to cater a train of 6 couches. The capacity of each couch is 280 passengers. Based on the computed maximum passengers in (a), compute headway possibilities and corresponding number of couches per train. You may use rail utilisation factor of 0.75 and load factor of 0.9.arrow_forward
- Linear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning