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The R&D department is planning to bid on a large project for the development of a...

The R&D department is planning to bid on a large project for the development of a new communication system for commercial planes. The accompanying table shows the activities, times, and sequences required:

ACTIVITY IMMEDIATE PREDECESSOR TIME (WEEKS)
A — 6
B A 3
C A 4
D A 4
E B 3
F C D 3
G D F 2
H D 3
I E G H 5

b. What is the critical path? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.)

A-C-F-G-I
A-B-E-I
A-D-H-I
A-D-F-G-I

c. Suppose you want to shorten the completion time as much as possible, and you have the option of shortening any or all of B, C, D and G each one week. Which would you shorten? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.)

B
C
D
G
E
F

d-1. What is the new critical path? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.)

A-C-F-G-I
A-B-E-I
A-D-H-I
A-D-F-G-I

d-2. What is the earliest completion time for the new critical path?

Completion time ______ weeks

business   Operations-Management   
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Homework Answers

Answer #1

Answer (b): Critical Paths A-C-F-G-I and A-D-F-G-I

Answer (c) Shorten Activities C, D and G

Answer (d-1) New Critical Paths A-C-F-G-I and A-D-F-G-I

Answer (d-2) 18 Weeks

Date. ANSWER E3 B3 Сч) IF 3 I 5 (A6) AG2 DY H3 Puration Paths A-B-E- ...A-C-E G- • A-D-F-G-I ...A-D-G- I A-D- Ha 20 20 17 18Date....... Maximum duration. is. 20 weeks... so the Paths having 2 weeks duration are. Critical Paths. (b) Critical Paths A-Date We crash.... nl. Critical Activities. G are Activity only they Crashed... and Critical so need to be y Crash Activity DData Date.. (d ... New Critical Path first we make schedule. make Crashing Paths. Duration. Duration after Crasting I 17 17 1Date... CRASHING I Critical Paths .ACFGI ADFGI Cara.s.h. c. CRASHIN.C.......... Critical Path - ADFG I CRASH D ☺ CRASHING 11Date...... D CRASH d-1 New Dutical hath with Maximum duration... of 18. Draps weeks Critical aths ACECI ADEGI d-2 Completion

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