Question

1. Given is a PERT project network diagram as shown below:

Activity	Start	A	B	C	D	E	F	G	H	I	J	K	End
Time	0	18	24	21	38	28	34	22	20	34	34	16	0

  

1. a) The Project Completion time =  
   b) The Earliest Start time, ES, of Activity F =  
   c) The Earliest Start time, ES, of Activity K =  
   d) The Latest Start time, LS, of Activity E =  
   e) The non-critical activities are =  (ex. type in critical activities as ABCD, no comma, no space)

Answer 1

1)
a) The Project completion time = total of all activities = 289
b) ES of Activity F = total A to E = 129
c) ES of Activity K = total A to K = 273
d) LS of Activity E = (total K to F) + Time of Activity E = 160 + 28 = 188
(LS is recorded going reverse from End)
WORKING NOTE:
Activity	Time	Total upto
A	18
B	24
C	21
D	38
E	28	129	A to E
F	34	160	K to F
G	22
H	20
I	34
J	34	273	A to J
K	16
TOTAL	289