$1$

$12$ points

Given is a PERT project network diagram as shown below.

$\backslash$table$[[$Time$,0,1\mathrm{.}56,2\mathrm{.}36,5\mathrm{.}00,2\mathrm{.}65,1\mathrm{.}98,5\mathrm{.}32,3\mathrm{.}69,2\mathrm{.}89,0]]$

a$)$ The Project Completion time $=($in $2$ decimal places$)$

b$)$ The Earliest Start time, ES$,$ of Activity G $=$ type your answer... $($in $2$ decimal places$)$

c$)$ The Latest Finish time, LF$,$ of Acitivity $C=($in $2$ decimal places$)$

d$)$ The critical activities are $=($ex$.$ type in critical activities as ABCD $,$ no comma, no space$)$