$1)$Draw an Activity$-$on $-$Arrow Diagram $($use proper tool$)$

ii$)$identifly project duration

iii$)$Slack for each activity

iv$)$ project criticla path for the following.

do step by step show the work

Activity name predecessor$($s$)$ Duration$($weeks$)$

A none $20$

B NONE $10$

C NONE $10$

D A$,$B $40$

E C $10$

F C$,$D $20$

G E$,$F $10$