Topic $1$:

In the following process, customer orders arrive at a rate of $5$ units

per hour.

Machine $1$

Machine $2$

Machine $3$

Machine $4$

$5$ units$/$hour

What is the utilization of the process?

$3$ units$/$hour

$4$ units$/$hour

$6$ units$/$hour

$100\%$

$60\%$

$80\%$

$120\%$