. A project consists of following activities:

Activity	Predecessor	Estimated duration (in days)
		Optimistic	Most-likely	Pessimistic
A	-	1	1	7
B	-	1	4	7
C	-	2	2	8
D	A	1	1	1
E	B	2	5	14
F	C	2	5	8
G	D, E	3	6	15
H	F, G	1	2	3

 

The expected project completion time is