determine the total project completion time $($in days$)$ and those activities that lie along the critical path. The appropriate data are shown in the following table:

$\backslash$table$[[$Activity$,$Time $($days$),\backslash$table$[[$Immediate$],[$Predecessor$($s$)]],$Activity,Time $($days$),\backslash$table$[[$Immediate$],[$Predecessor$($s$)]]],[a,m,b,a,m,b$