The Project Completion time $=15\mathrm{.}34($in $2$ decimal places$)$ b$)$ The Earliest Start time, ES$,$ of Activity G $=10\mathrm{.}20($in $2$ decimal places$)$ c$)$ The Latest Finish time, LF$,$ of Acitivity C $=5\mathrm{.}52($in $2$ decimal places$)$ d$)$ The critical activities are $=$ ACEGH $($ex$.$ type in critical activities as ABCD, no comma, no space$)$