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

Indirect cost of the Project is $100$ per day.

$\backslash$table$[[$Acthity$,$Predecessor,$\backslash$table$[[$Duration$],[[$dzrs$)]],\backslash$table$[[$Crash$],[$duration$]],\backslash$table$[[$Narmal$],[$cost of the$],[$activity$]],\backslash$table$[[$Additional$],[$cost$/$day$],[$to crash$]]],[1$ RBD$,-,4,3,600,750],[2.$ Design,$1,4,3,400,450],[3.$ Deveiap,$2,8,6,1200,1650],[4.$ Document,$2,3,3,1000,0],[5.$ Quality control,$3,4,3,2,500,550],[6.$ Launch,$4,5,2,2,800,0]]$

a$)$ Oraw the Network Diagam R identify the critical path

b$)$ What is the normal project duratian & associgted cost?

c$)$ Find out total float for each act$/$wity

$10.$ Crash the above relevant activities srstematically and determine the optimum project time and cost fifef $09$ Tabie$).$