Managing Supply Chain and Operations 1st Edition by Thomas Foster ,Scott Sampson,Cynthia Wallin,Scott Webb

Exercise 14

Customers arrive at teller windows at a bank at the rate of 12 per hour. A teller is able to process 15 customers per hour on average. If.he bank has a goal that customer wait time should be no more than 30 seconds to see a teller how many tellers should the bank have available to process customer requests?