Following table shows activities, their durations and labour requirement.

Activity	Immediate Predecessor	Duration (days)	Labours
A	-	4	9
B	-	2	3
C	-	2	6
D	-	4	4
E	B	3\ 8\
F	C	2	7
G	D, F	3	2
H	E, G	4	1

Prepare time scaled version network and histogram for EST and LST schedule. Which schedule will you prefer? Why?

Activity	Immediate Predecessor	Duration (days)	EST EFT	LST	LFT	Labours
A	-	4	0	4	7	11	9
B	-	2	0	2	2	4	3
C	-	2	0	2	0	2	6
D	-	4	0	4	0	4	4
E	B	3	2	5	4	7	8 …