The following is Allison Corporation's contribution format income statement for December 2014: 
The company had no beginning or ending inventories.The company produced and sold 10,000 units in December.
Required:
Assuming no change in either the cost structure or the average selling price,prepare a contribution format income statement for a month Allison Corporation reports no before-tax profit or loss:
Definitions:
Expected Marginal Cost
The anticipated cost of producing one additional unit of a good or service, taking into account all relevant factors and future circumstances.
Expected Marginal Benefit
is the anticipated additional benefit or utility obtained from consuming one more unit of a good or service.
Rational Decision Maker
An individual or entity that makes decisions by systematically considering the available information, alternatives, and potential outcomes.
Economic Theory
A set of principles and methodologies that economists use to understand, explain, and make predictions about economic processes and behaviors.
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