Question 4: in figure-1, some Activities on Arrow are given along with duration in works Answer the following points: (13+2-15 Marks) 1- Calculate the total duration of the project by finding the earliest start, latest start times and the float of the network diagram (See Figure 1) and 2- Show the critical path activities on the diagram, Solutions: 5 55 15 25 9 2 D 9 2 C 10 Figure-1 Critical Path = (B, E, 6 (H) line: 20 weeks