An assembly line is to operate eight hours per day with a desired output of 240 units per day. The following table contains information on this product's task times and precedence relationships:
TASK TASK TIME (SECONDS) IMMEDIATE PREDECESSOR
A 60 -
B 80 A
C 20 A
D 50 A
E 90 B, C
F 30 C, D
G 30 E, F
H 60 G
a. Draw the precedence diagram.
b. What is the workstation cycle time?
c. Balance this line using the longest task time.
d. What is the efficiency of your line balance?