Chapter 9

Exercises

1.A certain project has three activities on its critical path. Activity A's normal completion time is five days. It can be crashed to three days at a cost of $500. Activity B's normal completion time is six days, and it can be crashed to four daysat a costof $50. Activity C's normal completion time is eight days. It can be crashed to three days at a cost of $1,000. Which activity should the project manager crash and by how many days? How much will it cost?

2.Using the data below, create the project schedule using normal times. Determine the order in which you would crash the project one day, two days,and so onuntil it isin an all-crashmode. Identify how much it would cost for each day you crash the schedule.

Activity	Prodecessor	Normal Time	Normal Cost	Crash Time	Crash Cost	Crash Cost per day
A	_	12	200	9	350
B	A	8	300	8	300
C	A	9	250	7	450
D	B	6	400	5	600
E	B, C	5	150	4	225
F	C	10	500	9	650
G	D, E, F	8	400	6	900