Required information [The following information applies to the questions displayed below] Preble Company manufactures one product. Its variable manufacturing overhead is applied to production based on direct labor-hours and its standard cost card per unit is as follows: Direct material: 6 pounds at $9.00 per pound $ 54.00 Direct labor: 3 hours at $15 per hour 45.00 Variable overhead: 3 hours at $5 per hour 15.00 Total standard variable cost per unit $114.00 I The company also established the following cost formulas for its selling expenses: Variable Fixed Cost Cost per per Month Unit Sold Advertising $ 260,000 Sales salaries and commissions $ 220,000 $18.00 shipping expenses $ 9.00 The planning budget for March was based on producing and selling 20,000 units. However, during March the company actually produced and sold 25,000 units and incurred the following costs: a. Purchased 180,000 pounds of raw materials at a cost of $7.50 per pound. All of this material was used in production. b. Direct-laborers worked 61,000 hours at a rate of $16.00 per hour. c. Total variable manufacturing overhead for the month was $306,220. d. Total advertising, sales salaries and commissions, and shipping expenses were $268,000, $485,000, and $175,000, respectively