Huduko Inc offers several computer services. Huduko operates with a utilization of $35$ percent. The interarrival time of jobs is $9$

milliseconds $(0\mathrm{.}009$ seconds$)$ with a coefficient of variation of $1\mathrm{.}5.$ On average, there are $15$ jobs wiaiting in the queue to be served and

$55$ jobs in process $($i$.$e$.,$ being processed by a server rather than waiting to be sent to a server for processing$).$

How many servers do they have in this system?