Book Hint rint . rences Parker Plastic, Inc., manufactures plastic mats to use with rolling office chairs. Its standard cost information for last year follows: Direct materials (plastic) Direct labor Variable manufacturing overhead (based on direct labor hours) Fixed manufacturing overhead ($326,880 908,000 units) Standard Price (Rate) $ 0.73 per sq. ft. Standard Unit Cost $ 8.03 Standard Quantity 11 sq ft. 0.25 hr. $10.40 per hr. 2.60 0.25 hr. $ 2.00 per hr. 0.50 0.36 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 Variable overhead cost Fixed overhead cost 1,020,000 11,300,000 $ 7,910,000 306,000 $ 3,335,400 630,000 $ $ 363,000 Required: Calculate Parker Plastic's direct labor rate and efficiency variances. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance).) Direct Labor Rate Variance $ 339,000 U Direct Labor Efficiency Variance $ 58,400 U