Question attached Consider a process consisting of five steps thatmust be performed in sequence with no waitingbetween steps. That is, perform task A first,followed by B, and so on in alphabetical order. Thetask requirements and resource allocations forthese tasks are in the following table.Activity time for a single worker # of(min/unit)StationworkersA102B1163D81E51The manager of this process would like to analyzethe current configuration and identifyopportunities for improvement. To help him,answer the following. (Fill out with numbers only,keep three digits after the decimal if not wholenumbers):What is the bottleneck?(Fill out with letter in thisproblem)What is the capacity of this process?What is the flow time in mins?What is the cycle time in mins?

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Consider a process consisting of five steps that must be performed in sequence with no waiting between steps. That is, perform task A first, followed by B, and so on in alphabetical order. The task requirements and resource allocations for these tasks are in the following table. Activity time for a single worker # of '(min/unit) Station workers A 10 2 в 6 1 16 3 D 8 1 E 5 1 The manager of this process would like to analyze the current configuration and identify opportunities for improvement. To help him, answer the following. (Fill out with numbers only, keep three digits after the decimal if not whole numbers): What is the bottleneck?(Fill out with letter in this problem) What is the capacity of this process? What is the flow time in mins? What is the cycle time in mins?

Consider a process consisting of five steps that must be performed in sequence with no waiting between steps. That is, perform task A first, followed by B, and so on in alphabetical order. The task requirements and resource allocations for these tasks are in the following table. Activity time for a single worker # of '(min/unit) Station workers A 10 2 в 6 1 16 3 D 8 1 E 5 1 The manager of this process would like to analyze the current configuration and identify opportunities for improvement. To help him, answer the following. (Fill out with numbers only, keep three digits after the decimal if not whole numbers): What is the bottleneck?(Fill out with letter in this problem) What is the capacity of this process? What is the flow time in mins? What is the cycle time in mins?

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Currently a company that designs Web sites has six customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. Job Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) A 6 18 48 B 4 22 52 C 1 30 70 D 10 14 28 E 7 12 56 F 5 20 62 Develop a schedule by using the first-come, first-served (FCFS) rule and calculate the average flow time and average days past due for the schedule. Develop a schedule by using the earliest due date (EDD) rule and calculate the average flow time and average days past due for the schedule. Comment on the performance of the FCFS and EDD rules relative to average flow time and average days past due.
A computer center has two identical computers for batch processing. Thecomputers are used as parallel processors. Job times are estimated by the user, but experience has shown that an exponential distribution gives an accurate description of the actual job times. Suppose that at a point in time there are eight jobs remaining to be processed with the following expected job times (expressed in minutes):Job 1 2 3 4 5 6 7 8Expected time 4 8 1 50 1 30 20 6a. In what sequence should the jobs be processed in order to minimize theexpected completion time of all eight jobs (i.e., the makespan)?b. Assume that computer A is occupied with a job that has exactly two minutes of processing time remaining and computer B is idle. If job times are deterministic, show the start and end times of each job on each computer using the sequence derived in part (a).
An independent accountant is planning to prepare tax returns for six of her clients.Prior to her actually preparing each return, her secretary checks the client’s file to besure all the necessary documentation is there and obtains all the tax forms needed forthe preparation of the return. Based on past experience with the clients, her secretaryestimates that the following times (in hours) are required for preparation of the returnand for the accountant to complete the necessary paperwork prior to filing each return:Client Secretary Time Accountant Time1 1.2 2.52 1.6 4.53 2.0 2.04 1.5 6.05 3.1 5.06 0.5 1.5In what order should the work be completed in order to minimize the total timerequired for all six clients?
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Five jobs must be scheduled for batch processing on a mainframe computer system. The processing times and the promised times for each of the jobs are listedhere.Job 1 2 3 4 5Processing time 40 min 2.5 hr 20 min 4 hr 1.5 hrPromised time 11:00 A.M. 2:00 P.M. 2:00 P.M. 1:00 P.M. 4:00 P.M.Assume that the current time is 10:00 A.M.a. If the jobs are scheduled according to SPT, find the tardiness of each job and themean tardiness of all jobs.b. Repeat the calculation in part (a) for EDD scheduling
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