Answer and explanations

For Questions 22 - 25: The framing department has four jobs waiting to be processed. It is now time zero and all jobs are ready to begin. Each has only one operation remaining. All jobs arrived at the same time. Job Processing Time Due Date A 5 12 B 7 18 C 8 6 D 3 10 Using shortest processing time (SPT) rule, what is the average completing time? Fewer than or equal to 6 days Greater than 6 days but fewer than or equal to 10 days Greater than 10 days but fewer than or equal to 14 days