E9-10 (Algo) Calculating Variable Overhead Variances [LO 9-5] Parker Plastic, Inc., manufactures plastic mats to use with rolling office chairs. Its standard cost information for last year follows: Standard Quantity Standard Standard Price (Rate) Unit Cost Direct materials (plastic) Direct labor Variable manufacturing overhead 12 sq ft. 0.25 hr. $ 1.10 per sq. ft. $13.20 $13.20 per hr. 3.30 0.25 hr. $ 2.20 per hr. 0.55 (based on direct labor hours) 0.62 Fixed manufacturing overhead ($579,080 + 934,000 units) Parker Plastic had the following actual results for the past year: Number of units produced and sold Number of square feet of plastic used Cost of plastic purchased and used Number of labor hours worked Direct labor cost Usnisha munnhead rat 1,280,000 12,600,000 $ 12,600,000 332,000 $ 4,083,600 < 1 E90 000