can you provide a clear drawing and step by step explanation?

Problem 1 Network Analysis Palafox Construciton Firm, Inc. will soon begin to work on a building for US Tea that was initially started by another firm that has gone out of business. The construction firm's schedule of activities and related expected completions times for US Tea project are presented in the following time table: Activity Code Activity Description Estimated Time (in weeks A-B Obtain on-site work permits B-E Repair damages done by vandals B-C Inspect construction materials left on site C-E Order and receive additional N construction materials C-D Apply for waiver to add new materials D-E Obtain waiver to add new materials DUNN E-F Perform electric work F-G Complete interior partitions Required: a. Prepare the PERT network. b. Identify critical path and determine the path's expected time in weeks for the project. c. Which path requires the shortest time to complete? What is the path's slack time