Answer: 4,050 units
Explanation:
Units to be produced in July = Units sold + ending inventory - beginning inventory
Ending inventory = 20% of August sales = 20% * 4,690 = 938 units
Beginning inventory = 20% of July sales = 20% * 3,890 = 778 units
Units to be produced = 3,890 + 938 - 778
= 4,050 units
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