can someone please walk me through step by step on how my professor did this ? I haev no idea how they got these numbers and need in depth help for my exam. thank you. Question 4(4+4+4=12 points)You consider to take a haircut in one of the two local hair salons - Collegetown Salon (CTS) andMaplewood Salon (MWS). During busy periods, a new customer walks into CTS every 20 minutes (witha standard deviation of20 minutes).AtMWS, a customer walks in30 minutes (with a standard deviationof30 minutes).CTS has two staffs, while MWS has 1. A typical hair cut at either salon takes about 20minutes (with a standard deviation of20 minutes).aCVa=2020=1,CVp=2020=1,m=2Avg. service time p=20 mins. Avg. inter-arrival time =20 mins. Utilization u=pm*a=0.5Practice FinalTq=202*0.52(2+1)2-11-0.5*(12+122)=7.32minbCVa=3030=1,CVp=1,m=1Avg. service time p=20 mins. Avg. inter-arrival time =30. Utilization u=pa=0.67Tq=201*0.672(1+1)2-11-0.67*(12+122)=40min,T=Tq+p=40+20=60minc=5 customershour, the average inter-arrival rate isa=12 minutescustomer. Utilization=pm*a=202*12=2024=0.833.Tq=202*0.83332(2+1)2-11-0.8333*(12+122)=46.07min