Rosen Co. reports beginning inventory of 10 units at $28 each. Every week for 4 weeks it purchases an additional 10 units at respective costs of $30, $31, $32, and $34 per units for weeks 1 through 4. Calculate the cost of goods available for sale and the units available for sale for this four week period. Assume that no sales occur during those four weeks.

Please see the guidelines for posting homework problems:
http://www.askmehelpdesk.com/finance-accounting/announcement-font-color-ff0000-u-b-read-first-expectations-homework-help-board-b-u-font.html