Over the past year, a company has sold the following ten items. The following table shows the annual sales in units and the cost of each item.

a. Calculate the annual dollar usage of each item.

b. List the items according to their total annual dollar usage.

c. Calculate the cumulative annual dollar usage and the cumulative percentage of items.

d. Group the items into A, B, and C groups based on percentage of annual dollar usage.

Part Number Annual Unit Usage Unit Cost $ Annual $ Usage 1 21,000 1 2 5000 40 3 1600 3 4 12,000 1 5 1000 100 6 50 50 7 800 2 8 10,000 3 9 4000 1 10 5000 1 LO.1