4 The promoter of a rock concert in Indianapolis must perform the tasks shown in Table 19 before the concert can be held (all durations are in days).

a Draw the project network.

b Determine the critical path.

c If the advance promoter wants to have a 99% chance of completing all preparations by June 30, when should work begin on finding a concert site?

d Set up the LP that could be used to find the project’s critical path.