The information in the table below is available for a large fund-raising project.
a. Determine the critical path and the expected completion time of the project.
b. Plot the total project cost, starting from day 1 to the expected completion date of the project, assuming the earliest start times for each activity. Compare that result to a similar plot for the latest start times. What implication does the time differential have for cash flows and project scheduling?

Activity             Activity Time (days)           Activity Costs ($)               Immediate Predecessor(s)
A                                3                                      100                                  -
B                                4                                      150                                  -
C                                2                                      125                                 A
D                                5                                      175                                 B
E                                 3                                     150                                  B
F                                 4                                      200                                  C,D