1. A food-truck can produce 20 meals per hour. The demand rate is, however, only 15 meals per hour. (a) What is the flow rate? (b) What is the utilization of the food-truck? (c) What is the cycle time?
2. A new full-service, attendant-staffed fuel and car service station on Interstate 95 will service only northbound cars. The manager estimates that customers will arrive every 4 minutes and will require 6 minutes to be served at the pump. How many pumps should be installed if the manager desires a utilization factor of 0.75? What percent of the time will the pumps be idle? Assume that the coefficients of variation of both the inter-arrival times and the service times are equal to 1.