AQA D2 2006 June — Question 1

Exam BoardAQA
ModuleD2 (Decision Mathematics 2)
Year2006
SessionJune
TopicCritical Path Analysis

1 [Figures 1 and 2, printed on the insert, are provided for use in this question.] A construction project is to be undertaken. The table shows the activities involved.
ActivityImmediate PredecessorsDuration (days)
A-2
BA5
CA8
DB8
EB10
FB4
G\(C , F\)7
\(H\)D, E4
I\(G , H\)3
  1. Complete the activity network for the project on Figure 1.
  2. Find the earliest start time for each activity.
  3. Find the latest finish time for each activity.
  4. Find the critical path.
  5. State the float time for each non-critical activity.
  6. On Figure 2, draw a cascade diagram (Gantt chart) for the project, assuming each activity starts as late as possible.