Little’s law can only be used when ______.
a. the average inventory rate is equal to the average flow rate
b. the average inflow rate would be equal to the average outflow rate
c. the average inflow rate would be greater than the average outflow rate
d. the average inflow rate would be lesser than the average outflow rate
Answer is b. the average inflow rate would be equal to the average outflow rate
(The relationships between the variables in Little’s Law only work in a steady state. Steady state is achieved when the arrival rate of work for the systems is the same as the departure rate of completed work from that system - on average over the long-term.This means that throughput, arrival rate, and departure rate are the same.)
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