If the arrival rate in a queuing theory problem is $25$ per hour, what is the average time between arrivals?

$\mathrm{.}1$ hour

$\mathrm{.}5$ hour

$\mathrm{.}04$ hour

$\mathrm{.}25$ hour

Question $9$

A quantitative tool that can be used to bake cake is

Culinary school

Waiting Line Theory

Project Management

$($D$)$ Linear Programming