AQA D2 2009 June — Question 5

Exam BoardAQA
ModuleD2 (Decision Mathematics 2)
Year2009
SessionJune
TopicDynamic Programming

5 [Figure 2, printed on the insert, is provided for use in this question.]
A company has a number of stores. The following network shows the possible actions and profits over the next five years. The number on each edge is the expected profit, in millions of pounds. A negative number indicates a loss due to investment in new stores.
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  1. Working backwards from \(\boldsymbol { T }\), use dynamic programming to maximise the expected profits over the five years. You may wish to complete the table on Figure 2 as your solution.
  2. State the maximum expected profit and the sequence of vertices from \(S\) to \(T\) in order to achieve this.
    (2 marks)