The Economic Model of Optimal Choice: Tangency of Indifference Curve and Feasible Frontier
The economic model of choice, often applied to decisions like how long to work, assumes individuals seek to maximize their utility. This involves choosing the best possible combination of two goods, such as consumption and free time. Preferences are represented by indifference curves, and the set of possible choices is defined by the budget constraint (or feasible frontier). The utility-maximizing choice occurs at the point where the feasible frontier is tangent to the highest attainable indifference curve. At this point of tangency, the slope of the feasible frontier (the Marginal Rate of Transformation, MRT) is equal to the slope of the indifference curve (the Marginal Rate of Substitution, MRS).
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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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A student has a 70-day summer break and a job offer that pays $90 per day. The student's total earnings are their only source of funds for consumption. Given these conditions, it is possible for the student to take 30 days of free time and also achieve a total consumption of $4,000.
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A student has a 70-day summer break and a job offer that pays $90 per day. The student's total earnings are their only source of funds for consumption. If the student's goal is to have exactly $3,600 for consumption by the end of the summer, they must take ____ days of free time.
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The Economic Model of Optimal Choice: Tangency of Indifference Curve and Feasible Frontier
Learn After
An individual is choosing a combination of daily free time and consumption. At their current choice, which is on their feasible frontier, the rate at which they are willing to trade consumption for an extra hour of free time is greater than the rate at which they have to trade consumption for that extra hour (their wage rate). Which of the following actions would allow the individual to reach a more satisfying outcome?
Optimal Consumption Bundle
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An individual's utility is maximized at any point where their indifference curve intersects their feasible frontier, as all points on the feasible frontier represent attainable combinations.
An individual is choosing between two goods, and their possible consumption combinations are represented by a feasible frontier. Their preferences are represented by a series of indifference curves. Consider four specific combinations:
- Point A: Lies on an indifference curve but is located inside the feasible frontier.
- Point B: Lies on the feasible frontier, but a higher indifference curve also intersects the frontier at another point.
- Point C: Lies on the feasible frontier at a point where an indifference curve is just tangent to it.
- Point D: Lies on a very high indifference curve but is located outside the feasible frontier.
Which of these points represents the utility-maximizing choice for the individual?
Analysis of a Sub-Optimal Choice
Evaluating an Economic Choice
An individual makes choices over two goods, with their preferences shown by indifference curves and their constraints shown by a feasible frontier. Match each description of a consumption point with its economic implication.
An economist is modeling an individual's decision-making process to find their most preferred, yet achievable, combination of two goods. Arrange the following steps in the logical order required to identify this optimal choice.
To achieve the highest level of satisfaction possible within their constraints, an individual must choose a combination of goods where their personal willingness to trade one good for another is precisely __________ the rate of exchange for those goods available to them.
Finding the Optimal Choice on a Budget Constraint Graph
Influence of Personal Situation on Preferences
The Two Trade-Offs in Optimal Choice: MRS vs. MRT
The Optimality Condition (MRS = MRT)