Consider the following work breakdown structure:ActivityStartUVWPrecedesU,VW25 days35 daysW.XZDuration Estimates (Days)Optimistic352826XY28YZ26ZEnd36What is the estimated slack time for activity W?45 days85 days0 daysMost Likely50 40 35 40 29 5060Pessimistic655244523884

In a CPM network, there are various tasks or activities that make up the network. All of these tasks…

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Practical Management Science

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ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

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

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Stage 2 General Mathematics - Summative Discrete Models Test 1. Nine activities are needed to prepare a delivery of sneakers from the factory to the customers. The duration, in minutes, and immediate predecessors for these activities are shown in the table below. Prerequisite(s) Earliest Start Time Latest Start Time Activity A B C D E F G H Duration 5 3 8 9 I 26534 - ABUSE C, D C, D E F G, H a) Given the information in the first 3 columns, draw the Precedence Network for these activities. Slack Time b) Using the Critical Path Method, complete the table above (with Earliest Start Time, Latest Start Time and Slack Time columns) then state the Critical Path in the space below. c) What is the minimum completion time for the preparation of the delivery?
Class Exercise #1 Time estimates Expected Activity Optimistic Most Likely Pessimistic Time (ET) a b 31 49 44 56 с 48 72 D 22 34 Assume each time estimate consists of one data point A B Start m 40 50 60 31 A B D Variance (0²) End 1) What is the estimated expected (mean) time for activity C? A. 48 days B. 72 days C. 44 days D. 60 days E. 100 days
Job times which includes processing and set up times are shown below: Job Job Time (bs) Due Date (bs) 15 24 20 8 6 A > B C D 12 6 14 3 7 B Using FCFS, determine the average flowtime
Define the work breakdown structure (WBS)? with example?
List two rework cost-cutting methods. How does progressive delivery affect both methods?
Time according to schedule (days) Time according to schedule (days) Activity Activity A G C H E
3. The table below shows the ready time, process time and due date of 7 jobs. Job ID Ready Time Process Time Due Date 3 24 2 9 13 3 7 3 23 4 12 2 17 5 1 4 20 6 3 14 7 3 18 • Find a sequence to minimize total tardiness as much as possible (preferably below 21). • Draw your sequence on a Gantt-Chart like time-line.
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Draw Gantt Chart Activity Predecessor Time in days a a 8 Assignment 1 d 2 b a 7 e 3 e 6. i b, d 10 f, i 8 h 2 k h 17 end k, m bo
According to many current theory, here are several problems that affect employee scheduling: explain?
Explain what exactly is a work breakdown structure and how do they produce one ?
Table : Task time pizza assembly Task Description Roll Dough Add pizza source Sprinkle cheese A B с D E F G H Task time (sec) Preceding task 60 30 35 25 Add sausage Add Pepperoni 35 Add Mushrooms 22 Shrink-wrap pizza 15 Add label 23 A B с с с D,E,F G Total time 245 sec Table above shows the task time and precedence relationships for a pizza assembly. The product time per day is 8 hours and the production schedule requires 300 pizzas per day by the assembly time. 1. Draw the precedence diagram of the operation. 2. Determine the cycle time of the line. 3. Calculate the minimum number of workstations for this operation. 4. Construct the line layout of the operations following by rules below: 5. Longest task time rule. 6. Number of following rules. 7. Compute the resulting efficiency and balance of delay percentages. 8. If a worker is paid RM35 per day, compute the cost of idleness per week (assuming a work 6-day week).

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What is the estimated slack time for activity W? 45 days 85 days 0 days 25 days 35 days