It is possible to modify the network in Figure 4-7 so that the correct basic scheduling computations can be carried out by the simple procedure de- scribed at the beginning of this chapter. The required modifications are in the form of dummy type activities with suitable time estimates. For exam- ple, the addition of an activity 101-210 with a time estimate of 8 would eliminate the multiple initial events. If the main project had a scheduled completion time of 17, i.e., L10917, what activity and time estimate would eliminate the multiple end events?