Edexcel D1 2010 January — Question 6

Exam BoardEdexcel
ModuleD1 (Decision Mathematics 1)
Year2010
SessionJanuary
TopicCritical Path Analysis

6. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{17bc9fb2-13bf-4ffa-93ac-bef170467570-7_614_1315_1027_374} \captionsetup{labelformat=empty} \caption{Figure 5}
\end{figure} Figure 5 is the activity network relating to a building project. The number in brackets on each arc gives the time taken, in days, to complete the activity.
  1. Explain the significance of the dotted line from event (2) to event (3).
  2. Complete the precedence table in the answer booklet.
  3. Calculate the early time and the late time for each event, showing them on the diagram in the answer booklet.
  4. Determine the critical activities and the length of the critical path.
  5. On the grid in the answer booklet, draw a cascade (Gantt) chart for the project.