Question

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 1,045 hours each month to produce 2,090 sets of covers. The standard costs associated with this level of production are:

	Total		Per Set of Covers
Direct materials	$	49,533	$	23.70
Direct labor	$	10,450		5.00
Variable manufacturing overhead (based on direct labor-hours)	$	4,598		2.20
			$	30.90

During August, the factory worked only 800 direct labor-hours and produced 1,900 sets of covers. The following actual costs were recorded during the month:

	Total		Per Set of Covers
Direct materials (6,500 yards)	$	44,460	$	23.40
Direct labor	$	9,880		5.20
Variable manufacturing overhead	$	4,560		2.40
			$	31.00

At standard, each set of covers should require 3.0 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

Solution :

1.	Material Price Variance	$ 6,890	F
	Material Quantity Variance	$ 6,320	U
2.	Labor Rate Variance	$ 1,880	U
	Labor Efficiency Variance	$ 1,500	F
3.	Variable OH Rate Variance	$ 1,040	U
	Variable OH Efficicnecy Variance	$ 660	F

Working :

1. Material Variances

Direct Material Price Variance = (SR - AR) * AQ

= [($ 23.70 / 3) - ($ 44,460 / 6,500)] * 6,500

= [$ 7.90 - 6.84] * 6,500

= $ 6,890 Favorable

Direct Material Quantity Variance = (SQ - AQ) * SR

= [(1,900 * 3) - 6.500] * $ 7.90

= [5,700 - 6,500] * $ 7.90

= $ 6,320 Unfavorable

2. Direct Labor Variances

Direct Labor Rate Variance = (SR - AR) * AH

= [($ 10,450 / 1,045) - ($ 9,880 / 800)] * 800

= [($ 10.00 - $ 12.35] * 800

= $ 1,880 Unfavorable

Direct Labor Efficiency Variance = (SH - AH) * SR

= [(1,900 * 0.50) - 800] * $ 10

   = [950 - 800] * $ 10

= $ 1,500 Favorable

3. Variable OH Variances

Variable OH Rate Variance = (SR - AR) * AH

= [($ 4,598 / 1,045) - ($ 4,560 / 800)] * 800

= [($ 4.40 - $ 5.70] * 800

= $ 1,040 Unfavorable

Variable OH Efficiency Variance = (SH - AH) * SR

= [(1,900 * 0.50) - 800] * $ 4.40

   = [950 - 800] * $ 4.40

= $ 660 Favorable

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