Three jobs are to be assigned to three machines. Determine an appropriate assignment in order to minimise the total time required, based on the following information:JOBR-34S-66T-50A11200089Machine time in hoursB141012C6117

A linear programming problem known as an assignment problem in operations management entails finding…

Answered: Three jobs are to be assigned to three…

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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A company must perform a maintenance project consisting of seven activities. The activities, their predecessors, and their respective time estimates are presented below: Activity Break down both machines Clean machine 1 Clean machine 2 Re-set machine 1 Re-set machine 2 Re-calibrate both machines. Final test Designation A B с Using CPM, which activities have slack in this project? D E F G Immediate Predecessor None A A B с D and E F Time in Days 3 3 3 4 2 1 1
Q2: Six processes are to be laid out in six areas along a long corridor at Linda Babat Accounting services. The distance between adjacent work centres is 40 feet. The number of trips between work centres is given in the following table: То From A В D E F A 18 25 73 12 54 B 96 23 31 45 C 41 22 20 D 19 57 E 48 F a) Assign the processes to the work area in a way that minimizes the total flow, using a method that places processes with highest flow adjacent to each other. b) What assignment minimizes the total traffic flow?
..15.19 The following jobs are waiting to be processed at Julie Morel's machine center: PRODUCTION JOB DATE ORDER RECEIVED DAYS NEEDED DATE ORDER DUE A 180 200 175 230 210 AB B n D E 110 120 122 125 130 20 30 10 16 18 In what sequence would the jobs be ranked according to the fol- lowing rules: (a) FCFS, (b) EDD, (c) SPT, and (d) LPT? All dates are according to shop calendar days. Today on the planning cal- endar is day 130, and none of the jobs have been started or sched- uled. Which rule is best? Px
Question 2: start ever Activity A Activity B Activity A Activity B Activity C Activity D Activity E Activity F Activity G Activity H Activity Activity C 20% 40% 40% Calculate CTE of the following process: Activity D Activity E 2 days 1 day 1 day 2 days 2 days 1 day 1 day 4 days Cycle Time Activity G Activity H 2 hours 2 hours 1 hour 2 hours 2 hours 3 hours 2 hours 4 hours 20% Process Time end event L
3
Weldex Industries begins to manufacture a newly designed, small, spot welding machine. The labour hours required for making the second and third units are 28.6 and 28.2 hours respectively. The labour hours required to manufacture the 50th unit are Select one: 25.6 hours 23.8 hours 27.9 hours 29.3 hours
IO
How can a work breakdown structure contribute to scope creep prevention?
A work operation consisting of three elements has been subjected to a stopwatch time study. The recorded observations are shown in the following table. By union contract, the allowance time for the operation is personal time 5%, delay 5%, and fatigue 10%. Determine the standard time for the work operation.
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Environment Recycling, Inc. must clean up a large automobile tire dump under a state environmental cleanup contract. Suppose that some of the activities in the Environment Recycling, Inc. project can be crashed.The table below shows the crash times and costs associated with performing the activities at their original (normal) times and also for the crash times (all times are in weeks). Normal Crash Normal Crash Activity Predecessor(s) Time Time Cost Cost A — 6 5 $490 $640 B A 9 7 1,800 2,400 C A 8 7 860 1,060 D — 7 6 620 920 E B, C, D 9 7 1,900 2,300 F D 4 2 820 1,320 G D 4 3 620 870 H E 5 4 500 710 I F, G, H 7 5 950 1,550 Choose the correct network for the project. The correct network is C . Identify the critical path. The critical path is A-B-E-H-I. What is the total project completion time? Round your answer to the nearest whole number. ___ weeks What is the lowest cost solution if…
* A group of six jobs is to be processed through a two-machine flow shop. The first operation involves cleaning and the second involves painting. Determine a sequence that will minimize the total completion time for this group of jobs. Find out the idle time for work station 2. Processing times are as follows: Processing Time (hours) Work Station 1 Job Work Station 2 A 5 В 4 3 D 7 E 8 F 12 15 To employ Johnson's rule, create a "blank" sequence first, such as: 1st 2nd 3rd 4th 5th бth

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Three jobs are to be assigned to three machines. Determine an appropriate assignment in order to minimise the total time required, based on the following information: JOB R-34 S-66 T-50 A 11 8 9 Machine time in hours B 14 10 12 с 6 11 7