Note for tutor/s: Topic

Please show the solutions on how it was computed starting from question A to C (those orange cells on the picture provided below) such as its formula to get the answer that was shown (orange cells) *by using ms excel please*

11.\$1 Managing Waiting Lines at First Bank of Seatte stackeri? sis perition moes than a 107, ohase thac a swtome wili novd to sas more than 5 mindes before reaching a werishe S.4. c. Sally feels that a sighblicant coot is incwred by making a crotomer wait because of potential host fufure business. Sally estimakes bhe cast to be $0 so for each minate a c7estonter spends in she hank, cowaring hoth wairing fibe and senvice fime. Given this cost, how many telhers shound Sally caxploy? This question can be answered using the template Eor economic analysis of the Mi/Ms queucing moodel. The cost of service is Cn=$18 houriserver. The cost of waiting is Cin $0.50 minute/server =$30 hour / server. The toeal cosp of service and waiting is Cis+CwL. As secn in the semaplacs below, with 2 servers the total cost is $138,86. With 3 servers, the total cost is $106. 11. With 4 servers the fotal cost is 5118,34 . Therefore, Sally should employ 3 servers