Question

Problem 10-9 Comprehensive Variance Analysis [LO10-1, LO10-2, LO10-3]

Marvel Parts, Inc., manufactures auto accessories. One of the company’s products is a set of seat covers that can be adjusted to fit nearly any small car. The company has a standard cost system in use for all of its products. According to the standards that have been set for the seat covers, the factory should work 995 hours each month to produce 1,990 sets of covers. The standard costs associated with this level of production are:

	Total		Per Set of Covers
Direct materials	$	47,362	$	23.80
Direct labor	$	8,955		4.50
Variable manufacturing overhead (based on direct labor-hours)	$	2,388		1.20
			$	29.50

During August, the factory worked only 1,000 direct labor-hours and produced 2,300 sets of covers. The following actual costs were recorded during the month:

	Total		Per Set of Covers
Direct materials (8,800 yards)	$	50,600	$	22.00
Direct labor	$	10,580		4.60
Variable manufacturing overhead	$	4,600		2.00
			$	28.60

At standard, each set of covers should require 3.5 yards of material. All of the materials purchased during the month were used in production.

Required:

1. Compute the materials price and quantity variances for August.

2. Compute the labor rate and efficiency variances for August.

3. Compute the variable overhead rate and efficiency variances for August.

(Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.)

Answer 1

Standard materials price per yard	6.8		=23.8/3.5
Standard labor hour per unit	0.5		=995/1990
Standard labor rate per labor hour	9		=4.5/0.5
Standard variable rate per labor hour	2.4		=1.2/0.5
1
Materials price variance	9240	F	=50600-(8800*6.8)
Materials quantity variance	5100	U	=6.8*(8800-2300*3.5)
2
Labor rate variance	1580	U	=10580-(1000*9)
Labor efficiency variance	1350	F	=9*(1000-2300*0.5)
3
Variable overhead rate variance	2200	U	=4600-(1000*2.4)
Variable overhead efficiency variance	360	F	=2.4*(1000-2300*0.5)