Sohar Manufacturing plans to produce 27000 units, and 20000 units, respectively, in October, and November. Each of these units requires 3 units of part no. 879. Sohar has 31000 units of part no. 879 in stock on September 30. Management desires to maintain an ending raw- material inventory equal to 50% of the following month's production usage What will be the direct-material purchases budget for October in units