Question

Koontz Company manufactures a number of products. The standards relating to one of these products are shown below, along with actual cost data for May Standard Cost per Unit Actual Cost per Unit $ 5.40 $ 5.94 16.20 Direct materials: Standard: 1.80 feet at $3.00 per foot Actual: 1.80 feet at $3.30 per foot Direct labor: Standard: 0.90 hours at $18.00 per hour Actual: 0.92 hours at $17.50 per hour Variable overhead: Standard: 0.90 hours at $5.00 per hour Actual: 8.92 hours at $4.50 per hour Total cost per unit Excess of actual cost over standard cost per unit 16.10 $26.10 4.14 $ 26.18 50.08 The production superintendent was pleased when he saw this report and commented: "This $0.08 excess cost is well within the 2 percent limit management has set for acceptable variances. It's obvious that there's not much to worry about with this product Actual production for the month was 12,000 units. Variable overhead cost is assigned to products on the basis of direct labor-hours. There were no beginning or ending inventories of materials Required: 1. Compute the following variances for May. a. Materials price and quantity variances. b. Labor rate and efficiency variances c Variable overhead rate and efficiency variances 2 How much of the S0.08 excess unit cost is traceable to each of the variances computed in (1) above 3. How much of the $0.08 excess unit cost is traceable to apparent inefficient use of labor time?

Answer 1

Material Price Variance = (Standard Price – Actual Price)*Actual Quantity

= (3-3.30)*12000*1.8

= $6,480 U

Material Quantity Variance = (Standard Quantity – Actual Quantity)*Standard Price

= (1.80-1.80)*12,000*3

= $0

b.Labor Rate variance = (Standard Rate – Actual Rate)*Actual Hours

= (18-17.50)*0.92*12,000

= $5,520 F

Efficiency = (Standard Hours – Actual Hours)*Standard Rate

= (0.9-0.92)*12,000*18

= $4,320 U

c.Variable overhead Rate Variance = (Standard Rate – Actual Rate)*Actual Hours

=(5-4.5)*12,000*0.92

= $5,520 F

Efficiency = (0.9-0.92)*12,000*5

= $1,200 U

2.Direct Material Price = 6480/12000 = $0.54 U

Quantity = $0

Total = 0.54 U

Labor Rate = 0.46 F

Efficiency = 0.36 U

Total = 0.10 F

Variable overhead Rate = 0.46 F

Efficiency= 0.1 U

Total = 0.36 F

Excess of actual over standard cost per unit = 0.08 U

3.

Excess of actual over standard cost per unit = 0.08 U

Less: portion due to inefficiency

Labor efficiency variance = 0.36 U

Variable overhead efficiency variance = 0.1 U

Total = 0.46 U

Portion due to other variances = 0.38 F