completion time, the most likely completion time, and the pessimistic completion time $($all in days$)$ for a new contract are given in the following table:

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