hi answe b) please. i attached the answer of a)

3.49

a) Assume you have a project with 10 activities labeled AJ.

Derive the earliest completion time (or early finishEF), latest completion time (or late finishLF), and slack for each of the following tasks (begin at time = 0). Which tasks are on the critical path? Draw both a Gantt chart and a net- work diagram for these tasks, and make sure you highlight the critical path on your network diagram.

b) Generate the flow diagram and evaluate the single critical path. Also illustrate

all the non-critical paths . Then evaluate the permissible slack times

in non-critical tasks.

Activity Preceding Event Expected Duration Slack Critical Path A -6 EF -4 A A-B A-C A-C-D A-C-E A-C-D-F A-B-D-F-G A-C-D-F- G-H A-C-D-F- G-H-I A-C-D-F- G-H-I-J F.G D