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The average size of households in the United States has decreased over the past 100 years.
Contribution Margin Ratio
A measure expressing how a product's selling price exceeds variable costs, shown as a percentage of the sales price.
Fixed Expenses
Costs that do not vary with the volume of production or sales, such as rent, salaries, and insurance.
Contribution Margin
The difference between sales revenue and variable costs, indicating how much contributes to covering fixed costs and generating profit.
Variable Expenses
Costs that change in proportion to the activity of a business, such as sales commissions or raw materials.
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