The trim line at PW is a small subassembly line that, along with other such lines, feeds into the final chassis line. The entire assembly line, which consists of more than 900 workstations, is to make PW's new E cars. The trim line itself involves only 13 work elements and must handle

20

cars per hour. Work-element data are as follows:

Work Element	Time (min)	Immediate Predecessor(s)
A	1.8	None
B	1.6	None
C	0.4	None
D	1.5	A
E	0.7	A
F	0.5	E
G	0.8	C
H	1.4	B
I	0.5	H
J	1	K
K	1.4	F, G
L	1.4	D
M	0.8	L, I, J

d. Use the longest work element decision rule to balance the line and calculate the efficiency of your solution. Which work elements are assigned to each workstation? To start off, assign

A

to the Station 1

Work elements

should be assigned to Station 1.

Work elements

D, L

B, C, G

D, B

C, B, G

B, H

should be assigned to Station 2.

Work elements

C, G, K

D, L

D, C, G

I, C, G

D, C, I

should be assigned to Station 3.

Work elements

C, F

I, C, K

C, G, K

I, C, G

C, I, M

should be assigned to Station 4.

Work element(s)

J, M

K

K, J

K, J, M

K, M

should be assigned to Station 5.

The last unassigned work element

M

should be assigned to Station 6.

What is the efficiency of obtained solution?

nothing%

(Enter your response as a percent rounded to one decimal place.)

e. Use the most followers work element decision rule to balance the line and calculate the efficiency of your solution. Which work elements are assigned to each workstation? (If your answer is not in the list of choices presented check if there are multiple solutions possible at this station.)

Work elements

A, C, G

A, E, C

A, E, F

A, B

A, D, E

should be assigned to Station 1.

Work elements

B, G, F

D, G, F

D, L

B, H

B, D

should be assigned to Station 2.

Work elements

H, I

D, L

D, H

K, J

should be assigned to Station 3.

Assume that elements

K,

L

should be assigned to Station 4.

Work element(s)

I, M

I, J, M

I, J

M

J, M

should be assigned to Station 5.

Find the efficiency of obtained solution.

The efficiency is

nothing%.

(Enter your response as a percent rounded to one decimal place.)