Answer:
8 Kanban cards.
Explanation:
The values given are:
L= 40
C= 120
S= 10, 10/100=0.1
D= Since the average number of units that is demanded is 2400 and then the duration is 2 hours, it is also equivalent to 1200 units in 60 minutes.
D= 1200/60
D= 20
Therefore,
K= DL(1 + S)/C
= 20×40(1+0.10)/120
= 800×1.1/120
= 880/120
=7.333
K= 8( rounded up to the next whole number)
Thus, 8 Kanban cards are needed.