Edexcel D1 2005 January — Question 2

Exam BoardEdexcel
ModuleD1 (Decision Mathematics 1)
Year2005
SessionJanuary
TopicCritical Path Analysis
2. The precedence table for activities involved in producing a computer game is shown below.
ActivityMust be preceded by
A-
B-
C\(B\)
DA, C
E\(A\)
\(F\)E
\(G\)E
HG
ID, F
JG, I
KG, I
\(L\)H, K
An activity on arc network is to be drawn to model this production process.
  1. Explain why it is necessary to use at least two dummies when drawing the activity network.
    (2)
  2. Draw the activity network using exactly two dummies.
    (5)
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