how do you find unit produced for february (990)?

Glover Company provided the following information on expected sales in units: January 1,000 February 900 March 1.200 April 1,300 Glover's policy is to have 30% of next month's sales in ending inventory. On January 1, there were 300 units in inventory Each unit produced requires 2 pounds of material A and 5 units of material D. Material Acosts $4 per pound and material D costs $6 per unit. Glover requires 20% of the next month's production needs in inventory for each type of direct material. On January 1, there were 215 pounds of material A and 412 units of material D in inventory. How many units of material D does Glover expect to purchase in January? 5.190 - Correct! 5.428 792 January February Units to be produced 970 990 * DM per unit X5 DM for production 4,850 4,950 Des. Ending Inventory 990 Needed 5,840 - Beginning inventory - 412 Unit purchases 5,428