$($finish to start$)$;

assume $5$ day work

Activity Notation

ES$=$ EFP $+1($Early Start$)$

ID $($Activity ID$)$

EF $=$ ES $+$ D $-1($Early Finish$)$

LS$=$ LF $$ D $+1($Late Start$)$

D $($Duration$)$

LF$=$ LSS $1($Late Finish$)$

FF$=$ ESS $$ EF$-1($Free Float$)$

TF$=$ LF $$ EF $($Total Float$)$

P$=$ Predecessor

S$=$ Successor

D$=$ Duration

n