A wholesale store buys 500 of their most popular coffee mugs each month. The cost of ordering and receiving shipments is $12 per order. Accounting estimates annual carrying costs are $3.60. The supplier lead time is 2 operating days. The store operates 240 days per year. Each order is received from the supplier in a single delivery. There are no quantity discounts.

What quantity should the store order with each order? How many times per year will the store order?

Asupermarket has been experiencing long lines during peak periods of the day. the problem is noticeably worse on certain days of the week, and the peak periods are sometimes different according to the day of the week. there are usually enough workers on the job to open all cash registers. the problem is knowing when to call some of the workers stocking shelves up to the front to work the checkout counters. how might decision models the supermarket? what data would be needed to develop these models?