Answer: 2,060 units 
Step-by-step explanation:
The Beginning inventory of February is 30% of the sales in February. 
The ending inventory in February is 30% of March sales. 
February beginning inventory = 30% * 2,000 = 600 units 
Ending inventory = 30% * 2,200 = 660 units 
Units to be purchased in February = Sales for February + Ending inventory - Beginning units 
= 2,000 + 660 - 600
= 2,060 units