"Question $1$:

Work Breakdown structure:

Task A$,$ duration $6,$ dependent on none

Task B$,$ duration $5,$ dependent on none

Task XE$08$ C$,$ duration $3,$ dependent on none

Task D$,$ duration $12,$ dependent on task B and task C

Task E$,$ duration $2,$ dependent on task A

Task F$,$ duration $5,$ dependent on task B

Task G$,$ duration $1,$ dependent on task B

Task H$,$ duration $9,$ dependent on task E and task F

Task I, duration $7,$ dependent on task G

Task J$,$ duration $7,$ dependent on task H

Task K$,$ duration $3,$ dependent on task I

Task L$,$ duration $5,$ dependent on task D

a$.(15)$ Create an Activity$-$on$-$Arrow $($AOA$)$ diagram based on the given work

breakdown structure in the above.

b$.(15)$ Calculate ES$,$ EF$,$ LS$,$ and LF for each task and the amount of slack. List the tasks

that appear on the critical path"