Given the information provided below (predecessors, normal time, normal cost, crash time (the minimum duration) and crash cost (the cost if crashed to the minimum duration) for an nine-activity (a to i) project) answer the questions (a) through (e) using this template.

Activity	Predecessor	Normal Time	Normal Cost	Crash Time	Crash Cost
a	-	4	$ 50	2	$ 150
b	a	4	$ 40	2	$ 200
c	b	7	$ 70	4	$ 160
d	c, f	2	$ 20	1	$ 50
e	c	3	$ 30	2	$ 100
f	b	8	$ 80	5	$ 290
g	d, e	5	$ 50	3	$ 100
h	f	6	$ 60	2	$ 180
i	g, h	3	$ 50	3	$ 50

(a). Create the network diagram in the application of your choice and then insert a screen shot of the diagram here. The diagram can be created easily in MS Word using the Insert Shapes function. Alternatively, you can post an excel file with the network diagram rather than post it in the space below.

Identify the critical path or critical paths (remember, there may be more than one) of the network, the time, and cost of the normal level of activity for the project:

• The critical path (or paths) is: __________________
• The project duration: ___________
• The project cost is: _____________

(b). Calculate the crash cost-per-day. Enter your response to question 1(b) in the table provided below

Activity	Normal Time	Normal Cost	Crash Time	Crash Cost	Crash Cost/Day[1]
a
b
c
d
e
f
g
h
i

(c). Find the optimal way to crash the project by one day.

• What is the projected project cost?
• What is the projected project duration?
• What is the critical path (or paths)?
• What task or tasks were crashed?

Explain the results of your calculations.

[1] Assume that each tasks crash costs are linear, ie that each day a task is crashed has an equal cost.