The Carry-on Luggage Company must set up an assembly line for a wheeled carry-on bag. Forecasts show that 90 units per hour should be produced. The tasks required, task times, and precedence relationships are as follows:
Task Time (seconds) Predecessors
A 30 -
B 50 A
C 25 A
D 10 B
E 25 B
F 15 B
G 10 C, E, F
H 30 D, G
I 40 H
J 30 H
K 25 I, J
a) Draw the precedence diagram.
b) Balance the line into workstations using the longest operating time rule as a tie breaker.
c) What is the efficiency of the balanced line?