12–23 Using Table 12–3, draw the CPM chart for the project. In this case, make all identifications on the arrows (activities) rather than the events. Show that the critical path is twentyone weeks.

Using Table 12–4, draw the precedence chart for the project, showing interrelationships.
Try to use a different color or shade for the critical path.

Calculate the minimum cash flow needed for the first four weeks of the project, assuming the following distribution.
Activity Total Cost for Each Activity A–H 16,960 I–P 5,160 Q–V 40,960 W 67,200 X 22,940 Furthermore, assume that all costs are linear with time, and that the activity X cost must be spent in the first two weeks. Prove that the minimum cash flow is $92,000.

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TABLE 12-3. DATA FOR PROJECT CPM CHART Activity Preceding Activity Normal Time (Weeks) ABCDEFG A B,U,V,N C C C C 46322774 D.E I 2 J I.R 1 K J 1 L K 2 M L 1 N M 1 0 N 2 P 0 CORSTUY Q 1 4 1 1 1 S T W* X *Stands for total length of project. This is management support. * -22 2