1.A dress-making operation is being designed as an assembly line. The following table shows the tasks that need to be performed, their task times, and preceding tasks. If the goal is to produce 30 dresses per hour, answer the questions that follow the table.

Work Element

Immediate Predecessor

Task time (Sec)

A

None

25

B

A

30

C

A

15

D

A

30

E

C,D

40

F

D

20

G

B

10

H

G

15

I

E,F,H

35

J

I

25

K

J

25

a.Draw the precedence diagram.

b.What is the cycle time?

c.What is the theoretical minimum number of work stations?

d.Balance the line using the large number of following tasks, and the long task time to break ties.

e.What are the resulting efficiency and balance delay percentages?