managerial accountng

Ralph's Convenience store has a variable demand. The daily demand ranges from 135 to 105 customers a day who average purchasing 5 items each. The daily average demand is 150 customers. The convenience store currently operates 6 hours a day. Each customer's order takes approximately 2 minutes. Required: a. What is the average customer waiting time in minutes? (20 points) b. What is the average manufacturing lead time (ie., cycle time) for a customer? (20 points) *** Average waiting time = Daily average demand x (Processing time per customer 2x Daily capacity in minutes -(Daily average demand x Processing time per customer)]