Below given data on Normal time & cost$,$ Crach time Ri cost for a project.

Indirect cort of the Project is $100$ per dew.

$\backslash$table$[[$Actiwity$,$Predecessor,$\backslash$table$[[$Duration$]],\backslash$table$[[$Crash$],[$duration$],[($days$]],\backslash$table$[[$Normal$],[$cost of the$],[$actwity$]],\backslash$table$[[$Additional$],[$cost$/$dyy$],[$to cresh$]]],[1$ R&D$,=,4,3,600,750],[2.$ Design,$1,4,3,400,450],[3.$ Develap,$2,6,6,1200,1650],[4.$ Document,$2,3,3,1000,0],[5.$ Quality Contrui,$3,4,3,2,500,550],[6.$ Launch,$4,5,2,2,300,0]]$

a$)$ Draw the Network Diaeram Ra ifentify the criticel path

b$)$ What is the normal pro$/$ect durmion s as vociated c$$: $?$

c$)$ Find out iotal that for each asthets

$10.$ Crah the above reipart atifities smitmatically and desermife the optimum project time and rout fiet Q$9$ Table$).$