utilization of a resource pool

$3$

Question $3$

$2pts$

Prob$($Total time in process $>t\frac{t}{T}$ min$(Ri,Rp)u=\frac{R}{R}p$

Dominic runs an appliance repair shop and sells replacement parts for appliances to walk in customers. Customer take an average of $5$ minutes. It is a single phase system with $1$ server. The coefficient of arrivals and the coefficient of processing times is $1\mathrm{.}0.$ About $8$ customers an hour arrive. What is Dominic's utilization serving customers.