1 FOOD STAMPS Consider a person who has $750 per month in income and has preferences for food (F) and all other goods (X) represented by a utility function, U(F, X) = F0.2 X0.8. To simplify analysis, let's assume that both the price of food and the price of all other goods is $1 per unit such that F and X represent expenditure on food and all other goods, respectively. a. Set up a Lagrangian and derive the consumer's demand functions for food and all other goods. As you are solving, make sure you can explain each step in words. b. Now solve for the demand functions using the “substitution approach" whereby we sub- stitute the constraint directly into the objective function. Show that the resulting demand functions are the same as in part (a). c. What is the consumer's optimal bundle given the prices and income? How much utility does the consumer derive from this bundle?
1 FOOD STAMPS Consider a person who has $750 per month in income and has preferences for food (F) and all other goods (X) represented by a utility function, U(F, X) = F0.2 X0.8. To simplify analysis, let's assume that both the price of food and the price of all other goods is $1 per unit such that F and X represent expenditure on food and all other goods, respectively. a. Set up a Lagrangian and derive the consumer's demand functions for food and all other goods. As you are solving, make sure you can explain each step in words. b. Now solve for the demand functions using the “substitution approach" whereby we sub- stitute the constraint directly into the objective function. Show that the resulting demand functions are the same as in part (a). c. What is the consumer's optimal bundle given the prices and income? How much utility does the consumer derive from this bundle?
Microeconomics A Contemporary Intro
10th Edition
ISBN:9781285635101
Author:MCEACHERN
Publisher:MCEACHERN
Chapter6: Consumer Choice And Demand
Section: Chapter Questions
Problem 2QFR
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