Activity	Normal Time	Manpower requirement
0-1	2	4
1-2	3	3
1-3	4	3
2-4	2	5
3-5	4	3
3-6	3	4
4-7	6	3
5-7	6	6
6-8	5	2
7-9	4	2
8-9	4	9

Using the above table information ,

1. Re-arrange the activities suitably in order to reduce the existing total manpower.
2. If only 9 workers are available for the execution of the project, then re-arrange the activities suitably for leveling the manpower resource.