Cover-to-Cover Company is a manufacturer of shelving for books. The company has compiled the following cost data, and wants your help in determining the cost behavior. After reviewing the data, complete requirements (1) and (2) that follow.

Units Produced	Total Lumber Cost	Total Utilities Cost	Total Machine Depreciation Cost
7,000 shelves	$84,000	$10,050	$130,000
14,000 shelves	168,000	18,100	130,000
28,000 shelves	336,000	34,200	130,000
35,000 shelves	420,000	42,250	130,000

1. Determine whether the costs in the table are variable, fixed, mixed, or none of these.

Lumber
Utilities
Depreciation

2. For each cost, determine the fixed portion of the cost, and the per-unit variable cost. If there is no amount or an amount is zero, enter "0". Recall that, for N = Number of Units Produced, Total Costs = (Variable Cost Per Unit x N) + Fixed Cost. Complete the following table with your answers. Round variable portion of cost (per unit) answers to two decimal places.

Cost	Fixed Portion of Cost	Variable Portion of Cost (per Unit)
Lumber	$	$
Utilities
Depreciation

High-Low

Biblio Files Company is the chief competitor of Cover-to-Cover Company in the bookshelf business. Biblio Files is analyzing its manufacturing costs, and has compiled the following data for the first six months of the year. After reviewing the data, answer questions (1) through (3) that follow.

	Units Produced		Total Cost
January	4,360	units	$65,600
February	300		6,250
March	1,000		15,000
April	4,800		73,750
May	1,750		32,500
June	3,015		48,000

1. From the data previously provided, help Biblio Files Company estimate the fixed and variable portions of its total costs using the high-low method. Recall that Total Costs = (Variable Cost Per Unit x Number of Units Produced) + Fixed Cost. Complete the following table.

Total Fixed Cost	Variable Cost per Unit
$	$

2. With your Total Fixed Cost and Variable Cost per Unit from the high-low method, compute the total cost for the following values of N (Number of Units Produced).

Number of Units Produced	Total Cost
3,500	$
4,360
4,800

3. Why does the total cost computed for 4,360 units not match the data for January?

a. The high-low method is accurate only for months in which production is at full capacity.

b. The high-low method only gives accurate data when fixed costs are zero.

c. The high-low method gives a formula for the estimated total cost and may not match levels of production other than the highest and lowest.

d. The high-low method gives accurate data only for levels of production outside the relevant range.

Contribution Margin

Review the contribution margin income statements for Cover-to-Cover Company and Biblio Files Company on their respective Income Statements. Complete the following table from the data provided on the income statements. Each company sold 84,800 units during the year.

	Cover-to-Cover Company	Biblio Files Company
Contribution margin ratio (percent)	%	%
Unit contribution margin	$	$
Break-even sales (units)
Break-even sales (dollars)	$	$

Income Statement - Cover-to-Cover

Cover-to-Cover Company Contribution Margin Income Statement For the Year Ended December 31, 20Y8
Sales		$424,000
Variable costs:
Manufacturing expense	$254,400
Selling expense	21,200
Administrative expense	63,600	(339,200)
Contribution margin		$84,800
Fixed costs:
Manufacturing expense	$5,000
Selling expense	4,000
Administrative expense	12,200	(21,200)
Operating income		$63,600

Income Statement - Biblio Files

Biblio Files Company Contribution Margin Income Statement For the Year Ended December 31, 20Y8
Sales		$424,000
Variable costs:
Manufacturing expense	$169,600
Selling expense	16,960
Administrative expense	67,840	(254,400)
Contribution margin		$169,600
Fixed costs:
Manufacturing expense	$88,000
Selling expense	8,000
Administrative expense	10,000	(106,000)
Operating income		$63,600

Sales Mix

Biblio Files Company is making plans for its next fiscal year, and decides to sell two new types of bookshelves, Basic and Deluxe. The company has compiled the following estimates for the new product offerings.

Type of Bookshelf	Sales Price per Unit	Variable Cost per Unit
Basic	$5.00	$1.75
Deluxe	9.00	8.10

The company is interested in determining how many of each type of bookshelf would have to be sold in order to break even. If we think of the Basic and Deluxe products as components of one overall enterprise product called Combined, the unit contribution margin for the Combined product would be $2.31. Fixed costs for the upcoming year are estimated at $330,330. Recall that the totals of all the sales mix percents must be 100%. Determine the amounts to complete the following table.

Type of Bookshelf	Percent of Sales Mix	Break-Even Sales in Units	Break-Even Sales in Dollars
Basic	%		$
Deluxe	%		$