Time Remaining $1$ hour $18$ minutes $11$ seconds$01$:$18$:$11$

eBookItem $2$

Time Remaining $1$ hour $18$ minutes $11$ seconds$01$:$18$:$11$

A manufacturer has accepted the following jobs for July. Today is Thursday, end of June. The nonworking days in July are July $1,2,3,10,17,24,30,$ and $31.$

Job Date Order Received Production Time Including Setup Due Date Due Date in Working Days From Now

A $6/46\mathrm{.}25$ days $11$ July $7$

B $6/72\mathrm{.}5$ days $8$ July $5$

C $6/128\mathrm{.}25$ days $25$ July $19$

D $6/143\mathrm{.}5$ days $19$ July $14$

E $6/159\mathrm{.}5$ days $29$ July $23$

a$.$ Determine the processing sequence using priority rules FCFS$,$ SPT$,$ EDD, or CR$.$

Rule Sequence

FCFS

$($Click to select$)$

SPT

$($Click to select$)$

EDD

$($Click to select$)$

CR

$($Click to select$)$

b$.$ For each rule, find the average flow time and the average days late. $($Do not round intermediate calculations. Round the final answers to $2$ decimal places.$)$

Rule Average flow time Average days late

FCFS

SPT

EDD

CR

c$.$ Advise on which priority rule to use: FCFS$,$ SPT$,$ EDD, or CR$.$

$($Click to select$)$

has the lowest avg. flow time;

$($Click to select$)$

has the lowest avg. days late.

$($Click to select$)$

rule is good to use.