Table J.3 Six Jobs Have Just Arrived at Workstation 017;which Has Been

Multiple Choice

Table J.3
Six jobs have just arrived at workstation 017;which has been idle.All the pertinent data are given in the following table.The shop works eight hours per day.It is now time zero.

-Use the information in Table J.3.If the critical ratio rule is used,what is the average flow time?

A) fewer than or equal to 25 hours
B) greater than 25 but fewer than or equal to 27 hours
C) greater than 27 but fewer than or equal to 29 hours
D) greater than 29 hours