Problem $5-16($Static$)$

The home office billing department of a chain of department stores prepares monthly inventory reports for use by the stores' purchasing agents. Given the following information, use the critical path method to answer the questions below.

$\backslash$table$[[,$IMMEDIATE,TIME$],[$JOB AND DESCRIPTION,PREDECESSORS,$($HOURS$)],[$a$.$ Start,$-,0],[$b$.$ Get computer printouts of customer purchases,a$,10],[$c$.$ Get stock records for the month,a$,20],[$d$.$ Reconcile purchase printouts and stock records,b$,$ c$,30],[$e$.$ Total stock records by department,b$,$ c$,20],[$f$.$ Determine reorder quantities for coming period,e$,40],[$g$.$ Prepare stock reports for purchasing agents,d$,$ f$,20],[$h$.$ Finish,g$,]]$

a$.$ How long will the total process take?

Number of hours