Parker Plastic, Inc., 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)	9	sq ft.	$	1.08	per sq. ft.	$	9.72
Direct labor	0.3	hr.	$	11.30	per hr.		3.39
Variable manufacturing overhead (based on direct labor hours)	0.3	hr.	$	2.80	per hr.		0.84
Fixed manufacturing overhead $403,040 916,000 units)							0.44

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

Number of units produced and sold		1,100,000
Number of square feet of plastic used		11,700,000
Cost of plastic purchased and used	$	12,870,000
Number of labor hours worked		314,000
Direct labor cost	$	3,799,400
Variable overhead cost	$	890,000
Fixed overhead cost	$	371,000

Required: Calculate Parker Plastics variable overhead rate and efficiency variances and its over- or underapplied variable overhead. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for Favorable/Overapplied and "U" for Unfavorable/Underapplied.)