Final answer:
From the information given, we can only calculate the Cost of Goods Sold (COGS) for the company, which amounts to $2,550. To calculate gross sales, net profit, or contribution margin, additional financial data would be necessary.
Step-by-step explanation:
Using the provided information about a company's inventory and purchases, we can calculate the Cost of Goods Sold (COGS). Here is the calculation:
COGS = Beginning Inventory + Purchases - Ending Inventory
COGS = (100 units × $10) + $2,000 - (50 units × $9)
COGS = $1,000 + $2,000 - $450
COGS = $2,550
The available information is not sufficient to accurately calculate gross sales, net profit, or contribution margin. These would require additional information such as sales data, operating expenses, and variable costs.