Essay

The Convention of Positive Rates in Economics

In economic models, both the Marginal Rate of Substitution (MRS) and the Marginal Rate of Transformation (MRT) are derived from the slopes of curves that are downward-sloping and thus have negative values. Despite this, both the MRS and MRT are conventionally expressed as positive numbers. Analyze the reasoning behind this convention. Why is it more practical or intuitive for economists to work with these rates as positive numbers when discussing trade-offs?

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Updated 2025-07-30

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Economics

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Economy

Introduction to Microeconomics Course

The Economy 2.0 Microeconomics @ CORE Econ

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