Consider the following information about a small project:

Task	Duration (days)	Immediate Predecessors	Shortest Time Possible	Acceleration Cost per day
A	2	None	1	$70
B	4	A	2	$40
C	8	A	4	$10
D	6	A	5	$20
E	7	B	5	$30
F	4	D	3	$60
G	5	C,E,F	4	$60

(a) Draw the network diagram.

(b) In above network diagram, identify the critical path by forward and backward paths. What is the duration of the project? For the tasks that are not on the critical path, what are their slacks?

(c) Find the cost-effective way to reduce the completion time by 3 days.

Step 1: Accelerate task(s) _____ by _____ day(s)

Step 2: Accelerate task(s) _____ by _____ day(s)

Step 3: Accelerate task(s) _____ by _____ day(s)