Project Management

The work breakdown structure of a market research project is given below:  

Activity	Immediate predecessors	Activity time in days
A	-	20
B	-	15
C	-	25
D	A	10
E	B	20
F	C	18
G	D	8
H	A, E	12
I	A, E	10
J	C	14
K	G, H	25
L	F, I	22
M	J	30

a) Draw the activity-on-arrow network diagram and find the project completion time.   

b) What would be the project completion time if the activity time of K is reduced by 5 days? Don’t draw the network diagram again while solving this part of the question. 

The answer is available at
https://youtu.be/TdgSTM3UYso