The target ending inventory of finished products is as follows. March 31 2,000 April 30 2,284 May 31 2,160 June 30 2,348 2 units of material are required for each unit of finished product. Production for July is estimated at 2,660 units to start building inventory for the fall sales period. Wildhorse's policy is to have an inventory of raw materials at the end of each month equal to 50% off the following month's production requirements. Raw materials are expected to cost $4 per unit throughout the period. Calculate the May raw materials purchases in dollars. Raw material purchases cost $