Answer:
6 cards
Step-by-step explanation:
N = DT * (1+X) / C
Number of kanbans = [Demand during lead time + Safety stock] / Size of a bin
Number of kanbans = 1000 * 1 * (1 + 0.2) / 200
Number of kanbans = 1000*1*1.2 / 200
Number of kanbans = 6
So therefore, 6 cards should be used to govern this production.