In the capital budgeting model in Figure 6.4, investment 4 has the largest ratio of NPV to cash requirement, but it is not selected in the optimal solution. How much NPV will be lost if Tatham is...

In the capital budgeting model in Figure 6.4, investment 4 has the largest ratio of NPV to cash requirement, but it is not selected in the optimal solution. How much NPV will be lost if Tatham is forced to select investment 4? Answer by solving a suitably modified model.