ack, the owner of Jack's Electronic Repair, currently has five jobs to be scheduled, shown in order in which they arrived: Job Processing Time (hours) Due (hours) V 3 5 W 1 1 X 4 9 Y 2 3 Z 5 7 If Jack uses the shortest processing time first (SPT) priority rule to schedule these jobs, what will be the average flow time? ch 16- measurement Multiple Choice 7 hours 8 hours 3 hours 7.2 hours 5 hours