Question

HW Score: 44.57%, 17.88 Question de to start a new software company. As the vice president of operations, you are in charge of several production steps, including the process of record must take place before this "burn-in process is ready to use. * More Info Duration (weeks) Predecessors None None AB 3.5 1.5 4.5 Activity A Consult with engineering B Determine equipment layout C Install equipment D Order materials E Test equipment F Train employees G Perform pilot runs H Get OSHA approval 5.5 0.5 DE 5.5 Print Done Final Inswer. Clear All

Answer 1

ACTIVITY	DURATION	ES	EF	LS	LF	SLACK
A	2	0	2	1.5	3.5	1.5
B	3.5	0	3.5	0	3.5	0
C	1.5	3.5	5	3.5	5	0
D	4.5	2	6.5	6	10.5	4
E	5.5	5	10.5	5	10.5	0
F	0.5	10.5	11	10.5	11	0
G	7	11	18	11	18	0
H	5.5	10.5	16	12.5	18	2

FORWARD PASS
We calculate the ES and EF values using a forward pass where the ES of an activity is the maximum EF of all the predecessor activities.

BACKWARD PASS
We calculate the LS and LF values using a backward pass where the LF of the activity is the minimum of all the successor activities.

SLACK
Slack is the value which is determined by subtracting EF from the LF or ES from the LS.

CRITICAL PATH
Critical path is the chain in the project network where the slack value of all the activities is 0, what this means is that any delay in these activities would result in delaying the entire project.

CRITICAL PATH = BCEFG
DURATION OF PROJECT = 18

2. Since crashing F and G incurs more cost than $1000, we will crash activity B for 1.5 weeks only