Problem 5-17

For the network shown:

a-1. Determine the critical path.

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

a-2. Determine the early completion time in weeks for the project.

Early completion time _____ weeks

For the data shown, reduce the project completion time by three weeks. Assume a linear cost per week shortened.

ACTIVITY	NORMAL TIME	NORMAL COST			CRASH TIME	CRASH COST
A	7	$	7,900		4	$	13,000
B	8		12,800		6		18,900
C	7		5,200		5		7,200
D	9		4,700		8		5,700
E	5		3,800		4		6,100
F	4		6,400		3		8,600
G	4		7,900		3		8,000

b-1. Which activities in order of reduction would be shortened?

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

b-2. Find the resulting cost to crash.

Resulting cost $ _______

DI9) (B(8) A (7) (E(5) G4) ) C) F(4)