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- September 13, 2020
- By menge

Hi there,

Can anyone please help with these problems? You must show your work in the submission file for couple of problems. I have attached all the required documents.

Thanks in advance.

****You must show your detailed complete work in a separate

supporting file for problems 2 thru 6; problems 8 thru 11; and

problems 22-23****

1.(6) The following table defines a project.

Activit

y

A

B

C

D

E

F

G Immediate Predecessors

A

A

B

B, C

E

D, F Activity Time

5 days

9 days

8 days

6 days

4 days

4 days

3 days The minimum time required to complete the project is:

A) 23 days

B) 24 days

C) 25 days

D) 39 days

E) none of the above

2.(4) Use the network given in the Word file in the Final Examination Session under Course Content.

The early start time (ES) for job G is:

A) 13

B) 16

C) 21

D) 25

E) 38 3.(5) Use the network given in the Word file in the Final Examination Session under Course Content.

The late finish time (LF) for job C is

A) 7

B) 14

C) 16

D) 21

E) 22 4.(5) Use the network given in the Word file in the Final Examination Session under Course Content.

The critical path is given by:

A) A ? B ? E ? H

B) A ? B ? F ? H

C) A ? B ? F ? G ? H

D) A ? D ? G ? H

E) A ? C ? F ? G ? H

1 5.(4) Use the network given in the Word file in the Final Examination Session under Course Content.

The minimum time required to complete the project is:

A) 23 days

B) 24 days

C) 29 days

D) 31 days

E) none of the above 6.(5) Use the network given in the Word file in the Final Examination Session under Course Content.

The slack at activity D is:

A) 0

B) 7

C) 8

D) 13

E) None of the above 7.(4) One part of a PERT project, installing equipment, will most likely be completed in 6 days.

However, if there are no worker absences, the equipment can be installed in 3 days. If a

member of the work force happens to catch Bubonic Flu, this year?s disease, the installation

will take 15 days. What is the expected time (t e) for the equipment installation?

A) 3 days

B) 6 days

C) 7 days

D) 8 days

E) 15 days 8.(6) A firm desires to control inventory levels so as to minimize the sum of holding and order costs.

It costs the firm $50 to place an order. The firm estimates its annual carrying charge is 20%.

Weekly demand is 100 units, and there are 50 weeks in the work year. The item costs $10 per

unit. The lead-time for the product is 3 weeks. Assume that there are 5 working days per

week.

What quantity of items should the firm order each time so as to minimize total inventory costs,

i.e., what is the EOQ?

A) 100

B) 224

C) 500

D) 1000

E) none of the above 9.(4). Using the data of Question 8: If 400 units are ordered each time (i.e., EOQ = 400), then what

will be the total carrying cost per year?

A) $100

B) $200

C) $400

D) $800

E) $4000 2 10.(3) Using the data of Question 8: If 200 units are ordered each time, how many orders will be

placed in a year?

A) 2

B) 5

C) 10

D) 20

E) 25

11.(4) Using the data of Question 8: If 200 units are ordered each time, then the time between orders

(in working days) is

A) 2

B) 5

C) 10

D) 20

E) 25

12.(3) Using the data of Question 8: If 1000 are ordered each time, then what will be the total

ordering cost per year?

A) $50

B) $100

C) $200

D) $250

E) $300

13.(3) Use the data of Question 8 and assume no safety stock or service level requirement. In order

not to run out of stock before the receipt of a new order, at what inventory level should the firm

place an order? That is, what is the reorder point equal to?

A) 50

B) 160

C) 200

D) 300

E) 400

14.(4) Given that unit cost = $25, annual carrying charge = 10%, annual demand = 7500 units and

ordering cost = $15 per order. Assume that there are 50 weeks in the work year and 5 working

days per week. The lead-time for the product is 2 weeks. The EOQ is:

A) 150 units

B) 212.13 units

C) 300 units

D) 500 units

E) none of the above 3 15.(2) Ohio Machine Tool Company maintains an inventory pool consisting of 10 items. Each of these

items has a unique demand pattern and may require a different kind of inventory management

system. The annual demand pattern and the unit cost of these items are given in the following

table. Classify the items in A, B, and C categories according to annual dollar usage. Item Type

Item 1 Annual Usage

in thousands

10 Unit Cost

in Dollars

$2.50 Item 2 30 $1.25 Item 3 20 $16.00 Item 4 10 $0.75 Item 5 20 $3.00 Item 6 30 $2.50 Item 7 60 $14.25 Item 8 22 $10.00 Item 9 100 $2.75 Item 10 300 $4.25 Using the above data, Item 7 will be classified as:

A) A item

B) B item

C) C item

D) None of the above

16.(3). Using the data of Question 15, Item 8 will be classified as:

A) A item

B) B item

C) C item

D) None of the above

17.(3) Using the data of Question 15, Item 6 will be classified as:

A) A item

B) B item

C) C item

D) None of the above

18.(6) One end item A requires three component parts: B, C, and D. The bill of material indicates that

for each completed A, 3 units of B, 2 units of C, and 1 unit of D are required. Current inventory

for the four items is as follows: There are 22 As, 40 Bs, 50 Cs and 35 Ds in stock. If the lead

time for all items is one week and there are no scheduled receipts for any item, how many units

of product A can be delivered to customers at the start of next week (week 2)?

4 A) 35

B) 31

C) 25

D) 13

E) None of the above

Use the following data to answer questions 19 and 20.

Product D has gross requirements, on-hand inventory, and scheduled receipts as indicated in the timephased inventory status record below. Its lead time is 3 weeks.

Item D 1 2 3 4 5 6 Gross Requirements 100 300 100 300 200 50 On Hand/ Scheduled

Receipts 700 Net Requirements

Planned Order Releases A

B 19.(3) The value of entry A is:

A) 100

B) 200

C) 300

D) 700

E) None of the above.

20.(4) The value of entry B is:

A) 50

B) 300

C) 250

D) 200

E) None of the above 5 21.(3) Use the BOM given in the Word file in the Final Examination Session under Course Content. If

the master schedule calls for the production of 50 units of A, how many units of E are needed?

A) 50

B) 100

C) 200

D) 400

E) None of the above

22.(5) Use the BOM given in the Word file in the Final Examination Session under Course Content.

If the MPS calls for the production of 50 units of item A, how many units of item D are

needed?

A) 200

B) 300

C) 400

D) 500

E) None of the above

23.(7) Use the BOM given in the Word file in the Final Examination Session under Course Content

Now assume that 50 units of item A are called for by the MPS. On-hand inventory consists of

20 units each of items A, B, D and E. What is the net requirement for item D?

A) 220

B) 160

C) 120

D) 100

E) None of the above

24.(4) The master production schedule for two products, A and B, is shown below. To manufacture

item A, four (4) units of component C are required. To manufacture item B, three (3) units of

component C are required. Using this information, determine the gross requirements for

component C to start week 1.

Master Production Schedule: Wk 1

Product A

30

Product B

25

A)

B)

C)

D)

E) 195

220

155

190

None of the above 6