$($a$)$ Differentiate between Free Float and Total Float

$(2$ marks$)$

$($b$)$ After graduating from Kwara State University, you are planning to establish your own geotechnical consulting firm. To secure financing from the bank, you must present a plan for when you expect some income from your firm. You sit down with your banker and develop plan of things that must be accomplished prior to starting your first job. Estimated duration and precedence relationships for these activities are shown in the table below. Durations are given in days.

$\backslash$table$[[$Activity$,$Description,Duration$],[,,$Optimistic,$\backslash$table$[[$Most$],[$Likely$]],$Pessimistic,$\backslash$table$[[$Immediate$],[$Predecessor$]]],[$A$,$Purchase land,$25,60,90,-],[$B$,$Hire staff,$9,27,32,$A$],[$C$,$Obtain permits,$2,10,18,$A$],[$D$,$Obtain business license,$20,45,52,$A$],[$E$,$Site preparation,$3,4,11,C,D$