Final answer:
To meet sales requirements, factoring in opening and closing stock levels, the company needs to produce 3,000 units.
Step-by-step explanation:
To determine how much production is needed to satisfy sales, we need to account for both the opening stock and the closing stock. To calculate this, we use the following formula:
Production Needed = Sales + Closing Stock - Opening Stock
By plugging in the provided numbers:
Production Needed = 2,600 units (Sales) + 1,800 units (Closing Stock) - 1,400 units (Opening Stock)
Production Needed = 2,600 + 1,800 - 1,400
Production Needed = 3,000 units
Therefore, in order to satisfy sales given the levels of stock, the company needs to produce 3,000 units.