I only need help with part d-2, please help! The following CPM network has estimates of the normal time in weeks listed for the activities:   a. Identify the critical path. A-C-D-E-G A-C-D-F-G A-B-D-E-G A-B-D-F-G b. What is the length of time to complete the project? 25 weeks c. Which activities have slack, and how much? C, 1 week; E, 2 weeks. D, 1 week; E, 2 weeks. B, 2 weeks; E, 2 weeks. C, 2 weeks; F, 3 weeks. Here is a table of normal and crash times and costs. ACTIVITY NORMAL TIME CRASH TIME NORMAL COST CRASH COST A 7 6 $ 7,000 $ 8,000 B 2 1 5,000 7,000 C 4 3 9,000 10,200 D 5 4 3,000 4,500 E 2 1 2,000 3,000 F 4 2 4,000 7,000 G 5 4 5,000 8,000 d-1. Which activities would you shorten to cut two weeks from the schedule in a rational fashion? A, C A, E B, D B, C d-2. What would be the total incremental cost? I only need help with this question please.

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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I only need help with part d-2, please help!

The following CPM network has estimates of the normal time in weeks listed for the activities:

 

a. Identify the critical path.

  • A-C-D-E-G
  • A-C-D-F-G
  • A-B-D-E-G
  • A-B-D-F-G

b. What is the length of time to complete the project?

25 weeks

c. Which activities have slack, and how much?

  • C, 1 week; E, 2 weeks.
  • D, 1 week; E, 2 weeks.
  • B, 2 weeks; E, 2 weeks.
  • C, 2 weeks; F, 3 weeks.

Here is a table of normal and crash times and costs.

ACTIVITY NORMAL TIME CRASH TIME NORMAL COST CRASH COST
A 7 6 $ 7,000 $ 8,000
B 2 1 5,000 7,000
C 4 3 9,000 10,200
D 5 4 3,000 4,500
E 2 1 2,000 3,000
F 4 2 4,000 7,000
G 5 4 5,000 8,000

d-1. Which activities would you shorten to cut two weeks from the schedule in a rational fashion?

  • A, C
  • A, E
  • B, D
  • B, C

d-2. What would be the total incremental cost?

I only need help with this question please.
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