Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
10th Edition
ISBN: 9780134181981
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
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Chapter 13, Problem 19P
Dwayne Cole, owner of a Florida firm that manufactures display cabinets, develops an 8-month aggregate plan. Demand and capacity (in units) are
The cost of producing each unit is $1,000 on regular time, $1,300 on overtime, and $1,800 on a subcontract. Inventory carrying cost is $200 per unit per month. There is no beginning or ending inventory in stock, and no backorders are permitted from period to period.
Let the production (workforce) vary by using regular time first, then overtime, and then subcontracting.
a) Set up a production plan that minimizes cost by producing exactly what the demand is each month. This plan allows no backorders or inventory. What is this plan’s cost?
b) Through better planning, regular time production can be set at exactly the same amount, 275 units, per month. If demand cannot be met there is no cost assigned to shortages and they will not be filled. Does this alter the solution?
c) If overtime costs per unit rise from $1,300 to $1,400, will your answer to (a) change? What if overtime costs then fall to $1,200?
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The president of Hill Enterprises, Terri Hill, projects the firm's aggregate demand requirements over the next 8 months as follows:
January
1,400
May
2,100
February
1,700
June
2,100
March
1,600
July
1,700
April
1,900
August
1,500
Her operations manager is considering a new plan, which begins in January with 200 units of inventory on hand. Stockout cost of lost sales is $60 per unit. Inventory holding cost is $20 per unit per month. Ignore any idle-time costs. Evaluate the following plans D and E.
Plan D: Keep the current workforce stable at producing 1,600 units per month. In addition to the regular production, another 20% of the normal production units can be produced in overtime at an additional cost of $50 per unit. A warehouse now constrains the maximum allowable inventory on hand to 600 units or less.
Note: Do not produce in overtime if production or inventory are adequate to cover demand.…
The president of Hill Enterprises, Terri Hill, projects the firm's aggregate demand requirements over the next 8 months as follows:
May
2,100
January
February
1,450
1,700
1,700
June
2,300
July
1,900
March
April
1,700
August
1,300
Her operations manager is considering a new plan, which begins in January with 200 units of inventory on hand. Stockout cost of lost sales is $65 per unit. Inventory holding cost is $25 per unit per
month. Ignore any idle-time costs. Evaluate the following plan.
This exercise contains only Plan E.
Plan E: Keep the current workforce, which is producing 1,600 units per month, and subcontract to meet the rest of the demand. Subcontract cost is $75 per unit.
Month
10 December
1 January
2 February
3 March
4 April
5 May
6 June
7 July
8 August
Demand
1,450
1,700
1,700
1,700
2,100
2,300
1,900
1,300
Production
(Units)
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
Plan E
Ending
Subcontract (Units) Inventory
200
The total subcontracting cost = $
(Enter your response as…
The president of Hill Enterprises, Terri Hill, projects the firm's aggregate demand requirements over the next 8 months as follows:
January
1,500
May
2,300
February
1,700
June
2,100
March
1,700
July
1,900
April
1,700
August
1,500
Her operations manager is considering a new plan, which begins in January with
200
units of inventory on hand. Stockout cost of lost sales is
$125
per unit. Inventory holding cost is
$20
per unit per month. Ignore any idle-time costs. The plan is called plan C.
Plan C: Keep a stable workforce by maintaining a constant production rate equal to the average gross requirements excluding initial inventory and allow varying inventory levels.
Conduct your analysis for January through August.
The average monthly demand
requirement=18001800
units. (Enter your response as a whole number.)
In order to arrive at the costs, first compute the ending inventory and stockout units for each month by filling in…
Chapter 13 Solutions
Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
Ch. 13 - Make the case for, and then against, this pricing...Ch. 13 - Prob. 1DQCh. 13 - Why are SOP teams typically cross-functional?Ch. 13 - Prob. 3DQCh. 13 - Prob. 4DQCh. 13 - Prob. 5DQCh. 13 - Prob. 6DQCh. 13 - Prob. 7DQCh. 13 - Prob. 8DQCh. 13 - Prob. 9DQ
Ch. 13 - Prob. 10DQCh. 13 - Prob. 11DQCh. 13 - Prob. 12DQCh. 13 - Prob. 13DQCh. 13 - Prob. 14DQCh. 13 - Prob. 1PCh. 13 - Prob. 2PCh. 13 - The president of Hill Enterprises, Terri Hill,...Ch. 13 - Prob. 4PCh. 13 - Prob. 5PCh. 13 - Prob. 6PCh. 13 - Consuelo Chua, Inc., is a disk drive manufacturer...Ch. 13 - Prob. 8PCh. 13 - Prob. 9PCh. 13 - Prob. 10PCh. 13 - Prob. 11PCh. 13 - Southeast Soda Pop, Inc., has a new fruit drink...Ch. 13 - Ram Roys firm has developed the following supply,...Ch. 13 - Jerusalem Medical Ltd., an Israeli producer of...Ch. 13 - Prob. 15PCh. 13 - Prob. 16PCh. 13 - Prob. 17PCh. 13 - Prob. 18PCh. 13 - Dwayne Cole, owner of a Florida firm that...Ch. 13 - Prob. 24PCh. 13 - Prob. 25PCh. 13 - Prob. 26PCh. 13 - Evaluate the various configurations of operating...Ch. 13 - Prob. 2CSCh. 13 - After researching revenue (yield) management in...Ch. 13 - The Magic used its original pricing systems of...Ch. 13 - Prob. 3VC
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