Question

Use the following data for question below.

Activity	Normal Time (weeks)	Crash Time (weeks)	Normal Cost	Total Cost with Crashing	Pred 1	Pred 2
A	10	7	$200	$400
B	15	10	$250	$600
C	13	8	$600	$1,500	A	B
D	14	10	$800	$1,200	A	B
E	8	4	$1,000	$3,000	C	D
F	12	6	$1,200	$1,800	C	D
G	7	6	$700	$1,400	E	F
H	5	3	$500	$900	E	F

If the project must be completed in 40 weeks, which activities should be crashed?

A. activities: B 5 weeks and F 3 weeks

B. none, the project will be completed in 40 weeks with no crashing

C. activities: B 5 weeks, D 1 week and F 4 weeks

D. activity B 2 weeks

Answer 1

The answer is:

A. activities: B 5 weeks and F 3 weeks

Activity	Normal Time (weeks)	Crash Time (weeks)	Normal Cost	Total Cost with Crashing	Pred 1	Pred 2	Pred 3	Pred 4		Crash days
A	10	7	200	400						0
B	15	10	250	600						5
C	13	8	600	1,500	A	B				0
D	14	10	800	1,200	A	B				0
E	8	4	1,000	3,000	C	D				0
F	12	6	1,200	1,800	C	D				3
G	7	6	700	1,400	E	F				0
H	5	3	500	900	E	F				0

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