A builder has decided to use the techniques of project management to plan a job. He knew all the different activities of the job, the order of precedence and their average durations which are shown in the table below. Activity A B C D E Duration (in weeks) 3 4 4 7 2 Required: a) Draw a network diagram representing the sequence of activities and the dependence between them. Preceding activities None None A A B and C b) Determine how long it will take to complete the job by conducting the forward pass. c) By conducting the backward pass, identify the critical path and the non- critical path(s), showing all the duration of the paths. start time Note: The work for this task should be produced using Word drawing facilities OR Excel (then copy diagram to Word). The forward and backward passes should be clearly shown on the diagram. Each activity should be described using the notation shown in class as follows: Activity Earliest Earliest name finish time Activity Latest Latest duration finish time start time