2) Building a swimming pool Task Worker Category Excavate Machine Operator Frame the walls Masons Install Internal Plumbing Plumber Install Electricity Electrician Pour concrete Masons Install pump and filter Plumber Person # of Elapsed Materials Days Workers Time (days) ($) 6 2 0 1,500.00 8 4 0 800.00 4 2 0 700.00 2 2 0 500.00 4 2 4 2,000.00 1 1 0 3,000.00 Total 8,500.00 ANN Category Electrician Mason Machine Operator Plumber Wage Rate $/Day 200.00 160.00 120.00 200.00 a) Create a Gantt chart from the work breakdown structure. b) Create a PERT/CPM network showing the interdependencies of the different activities. How long will the project take? (Note: Don't forget to take "elapsed time" into account.) c) Using the information in your Gantt chart, as well as the information on wage rates and cost of materials, put together a budget showing planned total expenditures for the project