Problem 14-1B (continued)
Part 2
Calculation of Manufacturing Cost per BD
For Year Ended December 31, 2015
Variable production costs
Plastic for BDs ………………………………
Wages of assembly workers ……………
Labeling ……………………………………….
Total variable production costs ………..
Cost of factory rent …………………………
Machinery depreciation …………………..
Total fixed production costs …………….
Total production costs ………………………
* Total cost / 15,000 BDs.
Part 3
If 10,000 BDs are produced, we would expect the cost of the plastic for the BDs to
decrease to $1,000 (10,000 BDs x $0.10/BD), but the cost per unit will stay at $0.10
per BD. Variable costs decrease in total as the number of units produced
decreases, but the unit cost remains constant.
Part 4
If 10,000 BDs are produced, we would expect the cost of the factory rent to
remain at $6,750 in total because it is a fixed cost. However, the cost per unit will
increase to $0.675 per BD ($6,750 / 10,000 BDs). Fixed costs do not change in
total as production decreases, but the unit cost will increase as production
decreases.