Edexcel D1 2014 June — Question 2

Exam BoardEdexcel
ModuleD1 (Decision Mathematics 1)
Year2014
SessionJune
TopicCritical Path Analysis
2. (a) Draw the activity network described in the precedence table below, using activity on arc and exactly two dummies.
ActivityImmediately preceding activities
A-
B-
C-
D\(A , B\)
EC
FA, B
GA, B
HE, F
ID
JD, G
K\(H\)
(b) Explain why each of the two dummies is necessary.
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