DeWitt Industries has adopted the following production budget for the first 4 months of 2017, its 5,330 4,120 Month January February 10,110 March 8,130 April Each unit requires 5 pounds of raw materials costing $3 per pound. On December 31, 2016, the ending raw materials inventory was 10,110 pounds. Management wants to have a raw materials inventory at the end of the month equal to 20% of next month's production requirements. Prepare a direct mateials purchases budget by month for the first quarter