Answer to Question 1
a
Answer to Question 2
1. Inventoriable cost per unit = Variable production cost + Fixed manufacturing overhead/Capacity
Capacity Type Capacity Level Fixed Mfg. Overhead Fixed Mfg. Overhead Rate Variable Production Cost Inventoriable Cost Per Unit
Theoretical 900,000 1,170,000 1.30 2.40 3.70
Practical 520,000 1,170,000 2.25 2.40 4.65
Normal 260,000 1,170,000 4.50 2.40 6.90
Master Budget 225,000 1,170,000 5.20 2.40 7.60
2. PLF's actual production level is 300,000 bulbs. We can compute the production-volume variance as:
Production Volume Variance = Budgeted Fixed Mfg. Overhead
(Fixed Mfg. Overhead Rate Actual Production Level)
Capacity Type Capacity Level Fixed Mfg. Overhead Fixed Mfg. Overhead Rate Fixed Mfg. Overhead Rate Actual Production Production Volume Variance
Theoretical 900,000 1,170,000 1.30 390,000 780,000 U
Practical 520,000 1,170,000 2.25 675,000 495,000 U
Normal 260,000 1,170,000 4.50 1,350,000 180,000 F
Master Budget 225,000 1,170,000 5.20 1,560,000 390,000 F
3. Operating Income for PLF given production of 300,000 bulbs and sales of 225,000 bulbs 9.80 apiece:
Theoretical Practical Normal Master Budget
Revenue a 2,205,000 2,205,000 2,205,000 2,205,000
Less: Cost of goods sold b 832,500 1,046,250 1,552,500 1,710,000
Production-volume variance 780,000 U 495,000 U (180,000) F (390,000) F
Gross margin 592,500 663,750 832,500 885,000
Variable selling c 45,000 45,000 45,000 45,000
Fixed selling 220,000 220,000 220,000 220,000
Operating income 327,500 398,750 567,500 620,000
a225,000 9.80
b225,000 3.70, 4.65, 6.90, 7.60
c225,000 0.20