Question

A call center receives 25 callers per minute on average. On average, a caller spends 1 minute on hold and 4 minutes talking to a service representative. On average, how many callers are "in" the call center

Answer 1

Answer:

"125 callers" is the right answer.

Step-by-step explanation:

Given values:

Arrival calls rate,

= 25 per minute

Talking time,

= 4 minutes

Hold time,

= 1 minute

The flow time will be:

= $1 \ minute \ + 4 \ minutes$

= $5 \ minutes$

Flow rate,

= $Arrival \ calls \ rate$

= $25 \ per \ minute$

By using the Little's law,

⇒ $WIP = Flow \ rate\times Flow \ time$

By substituting the values, we get

            $= 25\times 5$

            $=125$

Thus the above is the correct approach.