Answer:
Purchases - February = 1940 units
Step-by-step explanation:
To calculate the units to be purchased in February, we first need to calculate the opening and closing inventory for the month of February. We know that the closing inventory each month is equal to 20% of next month's sale, so we can calculate the closing inventory for January (which will be opening inventory for February) as,
Opening Inventory - February = 20% * 1900 => 380 units
We can also calculate the ending inventory for February by using the expected sales of March.
Closing Inventory - February = 20% * 2100 => 420 units
The purchases for February can be calculated as follows,
Units Sold = Opening inventory + Purchases - Closing Inventory
1900 = 380 + Purchases - 420
1900 + 420 - 380 = Purchases
Purchases = 1940 units