Table $10\mathrm{.}10$

A work center has the following six jobs waiting to be processed $($all times are shown in days$)$:

Job Time Since Job Arrival $($days ago$)$

Process Time

Due Date $($days from now$)$

A $6410$

B $567$

C $4712$

D $388$

E $2520$

F $1315$

Use the information in Table $10\mathrm{.}10.$ What is the average flow time $($in days$)$ using the FCFS rule?

greater than $15$ days but fewer than or equal to $25$ days

greater than $35$ days

fewer than or equal to $15$ days

greater than $25$ days but fewer than or equal to $35$ days