4. A city hall plans on holding a townhall event at the end of the Fall. The activities that have to be completed, durat

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4.
A city hall plans on holding a townhall event at the end of theFall. The activities that have to be completed, duration of eachactivity, and their sequence are listed in the table below:
a. Determine the project duration.
b. What is the earliest start, earliestfinish time, latest start, latest finish time for activity E?
5.
A node has one entering activity, a, and two leaving activities,b and c. Given the following information, determine the lateststarting time for activity a: EFb = 15, EFc = 17, LFb = 24, LFc =27; activity times are a = 4, b = 6, c = 8.