The data for the C project are as follows.

Work activity Post-work Time required

a b,f 2-4-6

d e 6-8-10

e h 7-9-12

h end 2-3-5

f g 3-4-8

g end 5-7-9

b i 2-2-3

i j 2-3-6

j k 3-4-5

k end 4-5-8

c m 5-8-12

m n 1-1-1

n o 6-7-11

o end 8-9-13

Please help the manager with the following information.

a) Create a project network

b) find the main process,

(c) Find the total average working time of the project.

(d) Find the probability that the work will be completed within 27 weeks of the start of the project.