M Industries produces television antennas and has estimated sales for six models over the next six months. They provided raw material requirements and beginning and ending inventory estimates to prepare a production budget and calculate raw material purchase requirements. The production budget showed the units needed for each model based on sales, ending inventory, and opening inventory. This was used to calculate the pounds of raw materials X and Y needed for each model. The totals for X and Y needed for all production were summed. The raw material purchase budget was calculated by taking the total materials needed for production, adding the ending inventory, and subtracting the beginning inventory.