Table below activities, their durations and labour requirements:-

Sr. no.	Activity	i-j notation	Duration	Carpenters
1	K	11-12	2	3
2	L	11-14	2	6
3	M	11-17	1	3
4	N	12-13	4	-
5	P	14-15	5	-
6	Q	14-18	8	4
7	R	17-18	3	5
8	S	13-16	1	4

Activity N & P do not involved carpentry work.

a) Workout daily requirement of carpenters with all activity schedule to start at their EST, LST. Also prepare histogram.

b) Which schedule you will prefer & why?

Activity	i-j notation	Duration	EST	EFT	LST	LFT	Carpenters
K	11-12	2	0	2	3	5	3
L	11-14	2	0	2	0	2	6
M	11-17	1	0	1	6	7	3
N	12-13	4	2	6	5	9	-
P	14-15	5	2	7	5	10	-
Q …