Seven-Eleven Japan was able to reduce the number of vehicles required to serve each store, from 70 in 1974 to 11 in 1994. The company has made a lot of improvements in its supply chain to achieve this. Determine how the company has benefitted through improvements that it has done over these two decades in the following sub-domains of its supply chain:

What was the role of Seven-Eleven Japan's distribution centres (DCs) in replenishing the products to the stores? (2 marks)