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: 4 pounds at $10.00 per pound Direct labor: 2 hours at $16 per hour Variable overhead: 2 hours at $6 per hour Total standard variable cost per unit $ 40.00 32.00 12.00 $ 84.00 The company also established the following cost formulas for its selling expenses: Advertising Sales salaries and commissions Shipping expenses Variable Cost per Unit Sold Fixed Cost per Month $ 270,000 $ 240,000 $ 19.00 $ 10.00 The planning budget for March was based on producing and selling 30,000 units. However, during March the company actually produced and sold 34,500 units and incurred the following costs: a. Purchased 150,000 pounds of raw materials at a cost of $9.20 per pound. All of this material was used in production. b. Direct-laborers worked 62,000 hours at a rate of $17.00 per hour. c. Total variable manufacturing overhead for the month was $390,600. d. Total advertising, sales salaries and commissions, and shipping expenses were $280,000, $490,000, and $185,000, respectively.