Global Best Light (GBL), a producer of energy-efficient light bulbs, expects that demand will increase markedly over the next decade. Due to the high fixed costs involved in the business,

GBL has decided to evaluate its financial performance using absorption costing income. The production-volume variance is written off to cost of goods sold. The variable cost of production is $2.40

per bulb. Fixed manufacturing costs are $1,035,000 per year. Variable and fixed selling and administrative expenses are $0.20

per bulb sold and $210,000, respectively. Because its light bulbs are currently popular with environmentally conscious customers, GBL can sell the bulbs for $9.50 each.

GBL is deciding among various concepts of capacity for calculating the cost of each unit produced. Its choices are as follows:

Theoretical capacity	900,000	bulbs
Practical capacity	460,000	bulbs
Normal capacity	230,000	bulbs (average expected output for the next three years)
Master budget capacity	180,000	bulbs expected production this year

REQUIREMENTS

1.	Calculate the inventoriable cost per unit using each level of capacity to compute fixed manufacturing cost per unit.
2.	Suppose GBL actually produces 200,000 bulbs. Calculate the production-volume variance using each level of capacity to compute the fixed manufacturing overhead allocation rate.
3.	Assume GBL has no beginning inventory. If this year's actual sales are 180,000 bulbs, calculate operating income for GBL using each type of capacity to compute fixed manufacturing cost per unit