Question

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 Price (Rate)			Standard Unit Cost
Direct materials (plastic)	15	sq ft.	$	0.90	per sq. ft.	$	13.50
Direct labor	0.25	hr.	$	12.60	per hr.		3.15
Variable manufacturing overhead (based on direct labor hours)	0.25	hr.	$	1.80	per hr.		0.45
Fixed manufacturing overhead ($539,400 ÷ 930,000 units)							0.58

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

Number of units produced and sold		1,240,000
Number of square feet of plastic used		12,400,000
Cost of plastic purchased and used	$	9,920,000
Number of labor hours worked		328,000
Direct labor cost	$	3,968,800
Variable overhead cost	$	1,350,000
Fixed overhead cost	$	385,000

Required:
Calculate Parker Plastic’s 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, "U" for unfavorable, and "None" for no effect (i.e., zero variance).)

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

Answer 1

Voh Rate variance = (SR-AR) *AH

= (1.80 - 1,350,000/328,000)*328,000

= 759,600 U

Voh efficiency variance = (SH-AH) *SR

= (1,240,000*0.25 - 328,000)*1.80

= 32,400 U

Voh spending variance = 759,600U + 32,400U

= 792,000U