Planned Production Orders for a product is 900 units over the planning period. Inventory system shows that there is enough Raw Materials on hand to produce 500 units. There are Purchase Orders at our suppliers for enough supplies to produce 250 units. How much supplies should we order on New Purchase Orders with our suppliers?

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?