Dave fletcher was able to determine the activity times for

Dave Fletcher was able to determine the activity times for construction his laser scanning machine. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time and the critical path should also be determined. Here are the activity.

Activity	Time (weeks)	Immediate Predcessors	Activity	Time (weeks)	Immediate Predcessors
A	6		E	3	B
B	6		F	5	B
C	4	A	G	10	C,E
D	2	A	H	6	D,F

6

DaveAc€?cs earliest start (ES) and earliest finish (E,F) are