Edexcel D1 — Question 5

Exam BoardEdexcel
ModuleD1 (Decision Mathematics 1)
TopicCritical Path Analysis

5.
ActivityImmediately preceding activity
A-
B\(\boldsymbol { A }\)
\(\boldsymbol { C }\)\(\boldsymbol { A }\)
DA
E\(\boldsymbol { B } \boldsymbol { C }\)
FB C
G\(\boldsymbol { D }\)
\(\boldsymbol { H }\)D
IE
\(J\)E F \(G\)
\(K\)E F \(G\)
\(\boldsymbol { L }\)I J
The precedence table shows the activities involved in planning an opening ceremony. An activity on arc network is to be drawn to model this planning process.
  1. Draw the activity network using exactly two dummies.
  2. Explain why each of the two dummies is necessary.