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Chillingsworth has a neighbor, Shivers, who faces the same options for insulating his house as Chillingsworth.But Shivers has a larger house.Shivers's annual fuel bill for home heating is 700 dollars per year.Plan A will reduce his annual fuel bill by 15%, plan B will reduce it by 20%, and plan C will eliminate his need for heating fuel altogether.The plan A insulation job would cost Shivers 700 dollars, plan B would cost him 1,200 dollars, and plan C would cost him 7,700 dollars.If the interest rate is 10% and his house and the insulation job last forever, which plan is the best for Shivers?
Net Operating Income
This is the profit a company makes from its operations, after all operating expenses have been subtracted from revenues but before taxes and interest are deducted.
Contribution Margin
The amount remaining from sales revenue after variable expenses have been deducted, indicating how much revenue is contributing to fixed expenses and net income.
Variable Costing
An accounting method that only considers variable costs (costs that vary with the level of output) when calculating the cost of goods sold and production.
Absorption Costing
An accounting method that includes all manufacturing costs - direct materials, direct labor, and both variable and fixed manufacturing overhead - in the cost of a unit of product.
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