Q$2.$ a$.$ An organization determines that there are $480$ productive minutes available per day. The production schedule requirement is $40$ units be completed as output from the assembly line each day. Determine

$\backslash$table$[[$Task$,$Time $($Mins$),$Description,Predecessor$],[$A$,10,$Assemble frame,None$],[$B$,11,$Mount switch,A$],[$C$,5,$Assemble motor housing,B$],[$D$,4,$Mount motor housing,A$,$C$],[$E$,12,$Attach blade,D$],[$F$,7,$Assemble and attach safety grill,E$],[$G$,11,$Attach cord,F$],[$H$,3,$Test,G$,$H$]]$

i$)$ the Cycle time

$($ii$)$ the theoretical number of workstations

$($iii$)$ the efficiency

$($iv$)$ draw the precedence diagram.