Four jobs must be processed on a single machine. The time required to process each job

and the date the job is due are shown in Table $63.$ The delay of a job is the number of

days after the due date that a job is completed $($if a job is completed on time or early, the

job's delay is zero$).$ In what order should the jobs be processed to minimize the total de$-$

lay of the four jobs?

TABLE $63$

Durations and Due Date of Jobs