As a result the optimal number of machines which one
worker can serve is equal to eleven machines. However,
the management prefers to explore higher number of
machines. Thus, an elimination of some activities together
with rearrangement in order to reduce operator service
time is inevitable. Therefore, a number of machines
varied from 12 to 14 are investigated. A recalculation of
Tos in (1) based on different number of N must be
performed to measure amount of work needed to be
eliminated.