1.Given the followingQuantity Discount Schedule

Discount Number

Discount quantity

Discount %

Discount cost ($)

1

0 to 499

0

35

2

500 to 999

2.5

To be completed

3

1000 to 1499

3

To be completed

4

1500 to more

3.5

To be completed

If the purchasing cost per unit is $ 35, the ordering cost per order is $60; the annual demand is 7500 units, and the holding cost is 25% of the purchasing cost per unit. What order quantity will minimize the total inventory cost?