i need help answering these questions please.

Note: Attempt four questions only (all questions have equally mark) Q1- The data for a project are given below. Determine the free float and total float for each activity. Identify the critical path and find the project duration Activity A B C D E F G H I J K Predecessors. A A A A B C D F.G.H H LJE Time (Days) 47 7 56 107 6 10 15 10 Q2. By using PERT draw the network diagram for the following Table. If the probability of completing the project is 0.96, find the expected project completion time in weeks? Activities Predecessors Tm A B D E F A DE To 3 8 6 4 8 2 6 16 12 5 11 4 9 18 18 6 14 6 Q3-A project consists of the following activities and information. Find the optimal cost to 9 days? Normal Time Activities Following Crash Time (Day) (Day) Slop CD 3 2 600 B E 4 200 $ 3 100 7 5 200 E 4 3 400 A 6 E D 04- A firm manufactures 2 products A and B. The profits are 5S and 8S respectively. The firm has 2 machines and below is the required processing time in hours for each machine on each product Product Machines G H A 6 2 B 8 4 Machine G must be operated for at least 48 hours. Hours Available for machine H is 20 hours. Set up an LP problem to maximize profit and solve it graphically