ZAKI LLP is a networking entity.

Required

Using the data provided below

1. Draw an A-O-A diagram based on normal times and identify the critical path, calculate the normal cost for the project.
2. Determine the minimum project completion time with the least cost and calculate the percentage increase in costs.
3. Use the network diagram in (a) above to construct a simple Gantt chart.

Note: Time is in Weeks and Cost in USD.

Activity	Normal time	Crash time	Normal cost	Crash cost
1-2	10	7	1,000	1,600
1-3	15	10	2,000	3,000
2-4	8	6	1,800	2,600
2-5	20	16	4,500	5,300
3-6	30	20	7,200	9.600
4-5	14	12	5,000	6,000
5-6	12	9	3,300	4,500