Task	Time (in minutes)	Immediate Predecessors
A	1.00	None
B	.40	A
C	.45	A
D	1.10	A
E	.36	A
F	.05	None
G	1.32	B, C
H	.49	D
I	.54	E
J	1.54	E
K	.35	F
L	2.10	G
M	.30	H
N	1.82	I
O	.89	J
P	1.20	L, M, N
Q	1.30	O
R	.62	O
S	1.30	K
T	1.20	P, Q, R, S,
U	1.80	S
V	.30	T
W	.87	U
X	1.20	U
Y	1.90	V, W, X

DISCUSSION QUESTION

1. Determine the cycle time.

2. Determine the theoretical minimum number of workstations.

3. Balance this assembly line using the ranked positional weight heuristic: which tasks will be performed in which workstation?

4. Calculate the efficiency of your solution.