5. (8 Marks). Here is a precedence requirements for a construction project

Job	Predecessor	Task time (weeks)
A	-	2.0
B	A	1.5
C	B	3.0
D	A	1.0
E	D	0.5
F	C & E	2.0
G	F	0.5
H	A	0.5
I	H	1.0
J	G & I	1.0
K	H	0.5
L	K	0.5
M	J & L	1.0
N	M	0.5
P	N	-

a) (2 mark) Draw the project network

b) (5 marks) Calculate the ES, EF, LS and LF for all activity with proper procedures.

c) (1 mark) Calculate the free slack for all activity in this project network and put it in a table