1. Find the project completion time for the following list of activities.

Activity	Immediate Predecessor	Duration
A	-	3
B	-	3
C	-	4
D	A, B	5
E	B, C	4
F	D, E	2
G	E	3
H	F, G	5

1. Find a business that uses first come, first served & last come, first served for their business?
   1. What are the pro's and con's of each?
2. Find a business that uses Multiple servers for their business.
   1. What are the pro's and con's?
   2. When would you reevaluate the process?
3. Find a business that uses a single server for their business.
   1. What are the pro's and con's?
   2. When would you reevaluate the process?

please answer the question properly with full true explanation.