A company using a kanban system produces, among other products, a part L$105$A$.$ The daily demand for part L$105$A is $960$ units. The average waiting time for a container of parts is $0\mathrm{.}6$ days and the processing time for a container of L$105$A is $0\mathrm{.}2$ days. The container holds $80$ units. Currently $12$ containers are used for this item.

What is the safety stock rate implied in this system? $(3$ marks$)$

Suppose that no safety stock is used. How many containers would be needed now? $(2$ marks$)$