drow the network diagram for this shedeul , also find the float and critical path

like this

\begin{tabular}{|c|c|c|} \hline Activity & Duration (Days) & Predecessor \\ \hline 20 & 10 & 19 \\ \hline 21 & 0 & 20 \\ \hline 22 & 0 & 20 \\ \hline 23 & 52 & 21 \\ \hline 24 & 0 & 22 \\ \hline 25 & 106 & 25 \\ \hline 26 & 93 & 23,24 \\ \hline 27 & 0 & 25 \\ \hline 28 & 58 & 26,27 \\ \hline \end{tabular} Calculating Critical Path for a Network Diagram Identify tasks, durations \& dependencies. For forward pass, calculate the Early Start (ES) and Early Finish (EF). Task 5 is dependent on Task 2 and Task 4 being complete. So, ES for Task 5 is 14 days (dependent on Task 4, which is the longer task. Sten 3: Calculate Float in all tasks - Rackward Pass I For all tasks on Critical Path (Task1, Task 3, Task 4, Task 5), EF =LF&ES=LS Thus, float (slack) for tasks on Critical Path =LFEF=0 Float for Task 2=LFEF=149=5 days