SYG Manufacturing Corporation contracted with PEG Motors to provide motor casings.

According to the contract, SYG should design their assembly line to produce $480$ units of

casings in $12$ hours. SYG gathered tasks, task times, and sequence requirements shown

below. No cellular layout will be used.

Tasks Task time $($sec$.)$ Immediate predecessor$($s$)$

A

$80$

None

B

$30$

None

C

$40$

B

D

$15$

A

E

$60$

B$,$ C

F

$90$

D

G

$30$

D$,$ E

$H$

$20$

F$,$ G

I

$10$

$H$

J

$18$

$H$

K

$30$

G$,$ J

What is the theoretical minimum number of workstations required?

Calculate efficiency for theoretical number of stations and also for following the

immediate predecessor chart?

Calculate idle time for each workstation $($Hint$,$ Cycle time minus what you assigned for

each workstation$).$