Figure 31.6 shows the total outflow and inflow for each time period and the net differences
between the two. When these values are plotted on graphs as in Figures 31.7 and 31.8, it can
be seen that there are only three periods of positive cash flow, i.e., periods 3, 4, and 7. However,
while this shows the actual periods when additional moneys have to be made available
to fund the project, it does not show, because the gap between the outflow and inflow is so
large for most of the time, that for all intents and purposes the project has a negative cash flow
throughout its life.