Can someone please help check and show the right steps if I answer them wrong?

Question 3 (10 points) The City Commission of Bangkok has decided to build a botanical garden in the heart of the city for the recreation of its citizens. Procedures of all activities are given below. a) Draw the AON network for the construction activity, b) Determine the total project completion time and the critical path. c) Determine critical activities, slack activities and related time. d) A construction firm handed in contract agreement indicating that the total required project time will be 150 hours. Any delay will be charged by a late fee of $2,000 per hour. What is your opinion on such information? TIME (IN IMMEDIATE HOURS) PREDECESSOR(S) 20 None 60 Planning . Critical path : A,C,E,F,G, I Total complation : 200 hours Critical Activity : A,C,E,F,G, I Slacke : B,0,H 100 Planning 30 Purchasing 20 CODE ACTIVITY DESCRIPTION A Planning Find location; determine resource requirements B Purchasing Requisition of lumber and sand C Excavation Dig and grade D Sawing Saw lumber into appropriate sizes E Placement Position lumber in correct locations F Assembly Nail lumber together G Infill Put sand in and under the equipment H Outfill Put dirt around the equipment ! Decoration Put grass all over the garden, landscape, paint Sawing, excavation Placement 10 Slack time: B: 10 hr. D: 10 hr. 20 Assembly H: 10 hr. 10 Assembly 30 Infill, outfill a) Critical path B 20 80 ILO D /80 90 30 730 60 90 120) A 0 20 0 20 20 F E 1140 no 140 150 20 H 120 1150 160 11701 200 Sla 120 140 140) 20 150 20100 120 160 10 10 170 170 30 200 G 150 170 150 20 1170 Total project time = 200 hr Delays fees = 2,000 x 50 = 100,000$ 4