Suboptimality of Choices Below the Budget Constraint
Choosing a bundle of goods that lies below the budget constraint is considered suboptimal. This is because such a choice implies not using all available resources, meaning the individual is 'giving up something that is freely available.' At any such point, it is possible to increase the amount of one good without decreasing the amount of the other, or to increase both. Therefore, a rational individual aiming to maximize their utility under the 'more is better' assumption will always select a bundle on the budget constraint line rather than below it.
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Introduction to Microeconomics Course
The Economy 2.0 Microeconomics @ CORE Econ
Ch.3 Doing the best you can: Scarcity, wellbeing, and working hours - The Economy 2.0 Microeconomics @ CORE Econ
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Learn After
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An individual has a budget of $100 to spend on two items: Good A, which costs $2 per unit, and Good B, which costs $5 per unit. Match each potential consumption bundle below with its correct economic description, assuming the individual's goal is to get the most satisfaction and they always prefer more of either good.
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A rational consumer is observed purchasing a combination of goods that costs less than their total available budget. This observation logically implies that the 'more is better' assumption does not hold true for this consumer.