Parker Plastic, Incorporated, manufactures plastic mats to use with rolling office chairs. Its standard cost information for last year follows:

	Standard Quantity		Standard Price (Rate)		Standard Unit Cost
Direct materials (plastic)	13	square foot	$ 1.55	per square foot	$ 20.15
Direct labor	0.3	hour	$ 12.10	per hour	3.63
Variable manufacturing overhead (based on direct labor hours)	0.3	hour	$ 1.20	per hour	0.36
Fixed manufacturing overhead ($480,480 924,000 units)					0.52

Parker Plastic had the following actual results for the past year:

Number of units produced and sold	1,180,000
Number of square feet of plastic used	12,100,000
Cost of plastic purchased and used	$ 18,150,000
Number of labor hours worked	322,000
Direct labor cost	$ 3,799,600
Variable overhead cost	$ 1,200,000
Fixed overhead cost	$ 379,000

Required:

Calculate Parker Plastics variable overhead rate and efficiency variances and its over- or underapplied variable overhead.

Note: 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).

Variable Overhead Rate Variance
Variable Overhead Efficiency Variance
Variable Overhead Spending Variance