QUESTION 4 (SCHEDULING: JOHNSON'S RULE)The following schedule was prepared by the production manager of Marymount Metal Shop:Determine a schedule that will result in the earliest completion of all jobs on this list.CUTTINGPOLISHINGJobABCDEFG(ii)(iii)(iv)Start02611151720Finish261115172021Start2615232112024Finish591320232428What is the optimal sequence?Draw the time-phased chart.What is the total completion time?What is the total idle time at Polishing work centre?

Sequencing is an appropriate order of plan as per which the process of operations works. It defines…

Answered: (i) (ii) (iii) (iv) What is the optimal…

Practical Management Science

6th Edition

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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time (hours) pH 7.00 7.30 6.99 7.00 Assignment 1 2 7.12 7.25 7.12 7.20 3 720 7.16 720 7.16 4 6.98 7.00 6.94 7.00 5 6.99 6.99 6.99 6.98 6 7.00 6.93 7.02 6.93 7 6.92 7.00 6.92 7.02 Construct the X-Bar charts and R- charts 6.88 6.82 6.94 6.99 7.10 7.00 7.00 7.00 for reporting your results 10 721 7.02 721 7.04 11 7.01 6.86 7.01 6.90 12 6.86 6.98 6.90 6.98 13 6.90 7.00 6.87 7.00 14 7.01 7.04 7.01 7.05 15 7.00 6.95 7.00 6.99 16 7.09 7.20 7.03 7.20 17 6.89 7.14 6.87 7.15 18 6.98 6.80 6.98 6.89 19 7.00 6.90 7.00 6.90 20 7.20 7.00 723 7.00 21 7.04 7.03 7.08 7.00 22 6.90 6.92 6.98 6.92 23 7.00 7.00 7.00 7.00 24 7.00 6.97 7.01 6.98
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17.22. Updike Upholstery cuts and sews fabric for custom ordered chairs, ottomans, and sofas. Often, the more complicated patterns are for the smaller pieces, where cutting is more time-consuming than sewing. Thus, cutting and sewing times vary. Today's list of jobs, shown below, are for an important customer who needs them shipped out (in one shipment) as soon as possible. Determine the sequence of jobs that will complete the customer's order as quickly as possible, and notify the customer when the order is expected to ship. Jobs Cutting Sewing А 4 2 6. 3 1 3 4 3 1 E
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A time study involving the preparation of hamburgers at Bill’s fast-food restaurant used the snap-back method to obtain the data (in minutes) shown below. Allowances typically constitute 15% of normal time. The schedule calls for 300 hamburgers to be prepared during the lunch rush. If each part-time employee works 190 minutes per day, how many employees will be needed? Observation Work Element 1 2 3 4 5 t F RF NT 1. Prepare Patty 0.45 0.41 0.50 0.48 0.36 1 0.9 2. Cook First side 0.85 0.81 0.77 0.89 0.83 1 1.2 3. Flip, press, and cook the other side 0.60 0.55 0.59 0.58 0.63 1 1.2 4. Assemble 0.31 0.24 0.27 0.26 0.32 1 1.0 Show work

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(i) (ii) (iii) (iv) What is the optimal sequence? Draw the time-phased chart. What is the total completion time? What is the total idle time at Polishing work centre?