Edexcel D2 2009 June — Question 4

Exam BoardEdexcel
ModuleD2 (Decision Mathematics 2)
Year2009
SessionJune
TopicNetwork Flows

4. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{4002eb3f-9d7e-40a1-8fd4-5a271d14c8e7-5_888_1607_248_228} \captionsetup{labelformat=empty} \caption{Figure 1}
\end{figure} Figure 1 shows a capacitated network. The capacity of each arc is shown on the arc. The numbers in circles represent an initial flow from S to T . Two cuts \(\mathrm { C } _ { 1 }\) and \(\mathrm { C } _ { 2 }\) are shown in Figure 1.
  1. Find the capacity of each of the two cuts.
    (2)
  2. Find the maximum flow through the network. You must list each flow-augmenting route you use together with its flow.
    (3)