Sharp company needs to reduce their inventory cost by determining the optimal quantity of material to be obtained per order, the company operates 200 day-working year according to the following data:

1. -The annual demand is (1000 units)
2. The ordering cost is (SR 10) per order.
3. -The holding cost per unit is (SR 50)
4. -Daily production rate is (8 units daily)
5. -Daily demand rate is (4 units daily)

Calculate the following:

1. The optimal quantity of material to be obtained per order
2. The minimum total cost for the inventory
3. The expected numbers of orders
4. The expected time between the orders
5. The optimal production quantity