5.18 In a two-good, two-consumer economy, utility functions are u¹ (x₁, x₂) = x₁ (x₂)², u²(x₁, x₂) = (x₁)²x₂. Total endowments are (10, 20). (a) A social planner wants to allocate goods to maximise consumer 1's utility while holding con- sumer 2's utility at u² = 8000/27. Find the assignment of goods to consumers that solves the planner's problem and show that the solution is Pareto efficient. (b) Suppose, instead, that the planner just divides the endowments so that e¹ = (10, 0) and e² = (0, 20) and then lets the consumers transact through perfectly competitive markets. Find the Walrasian equilibrium and show that the WEAs are the same as the solution in part (a).

5.18 In a two-good, two-consumer economy, utility functions are u¹ (x₁, x₂) = x₁ (x₂)², u²(x₁, x₂) = (x₁)²x₂. Total endowments are (10, 20). (a) A social planner wants to allocate goods to maximise consumer 1's utility while holding con- sumer 2's utility at u² = 8000/27. Find the assignment of goods to consumers that solves the planner's problem and show that the solution is Pareto efficient. (b) Suppose, instead, that the planner just divides the endowments so that e¹ = (10, 0) and e² = (0, 20) and then lets the consumers transact through perfectly competitive markets. Find the Walrasian equilibrium and show that the WEAs are the same as the solution in part (a).

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

See similar textbooks

Similar questions

2. Consider an economy with two agents and two commodities. Consumers' preferences are represented by the following utility functions u₁(x,x) = (x²) ¹ (x²) ½ u₂(x², x²) = x² + x². Consumers' initial endowments are e² = (6,4). Note: You can normalize the price of one good to 1 at any point when solving this question. e¹ = (10,2) (a) Draw the Edgeworth box that represents this economy. Clearly indicate the size of the box (i.e. the maximal feasible amounts of good 1 and good 2). Show the location of the initial endowment and draw the indifference curve of each consumer that passes through the initial endowment.
3(b)Consider the following social choice problem in the setting of consumption of two goods by two consumers. The two goods are called tillip and quillip and the two consumers are called 1 and 2. Consumer 1 has utility function U; (t,g) =6+.4 In(t) + .6 In(q) (where t is the amount of tillip 1 consumes and q is the amount of quillip). Consumer 2 has utility function U; (t,q) = 8 + In (t) + In(q). The social endowment consists of 15 units of tillip and 20 units of quillip. a. Suppose that a social dictator has social welfare functional of the following form: social welfare, as afunction of (u",u") is a weighted sum with weight 2 on the lesser of u' and u' and weight 1 on the greater of the two. What will be the welfare optimum plan chosen by this social planner? b. What is the set of all feasible, Pareto efficient allocations of the consumption good for this society? %3D
6.7 (1) Mary's utility function is U(b, c) = b+ 100c – c, where b is the number of silver bells in her gardem and e is the number of cockle shells. She has 500 square feet in her garden to allocate between silver bells and cockle shells. Silver bells each take up 1 square foot and cockle shells each take up 4 square feet. She gets both kinds of seeds for free. (a) To maximize her utility, given the size of her garden, Mary should plant her "budget constraint" for space. Solve the problem as if it were an ordinary demand problem.) silver bells and cockle shells. (Hint: Write down (b) If she suddenly acquires an extra 100 square feet for her garden, how much should she increase her planting of silver bells?_ How much should she increase her planting of cockle shells? (c) If Mary had only 144 square feet in her garden, how many cockle shells would she grow?- (d) If Mary grows both silver bells and cockle shells, then we know that the number of square feet in her garden must be greater…
5. Sheila and Bruce are taking a canoe trip. Sheila brought 10 boxes of peanuts (x) and 15 bags of chips (y). Sheila's utility function is U*(x,y) = lnvx*+ Invy°. Bruce also brought 20 boxes of peanuts and 5 bags of chips. Bruce's utility function is UB(x.y) = min[x', y'I. a) Illustrate the endowment point and draw a sample set of indifference curves through the endowment point. b) If Sheila and Bruce trade what will be the pattern of mutually beneficial trade? c) If the terms of trade are the number of bags of chips (y) per box of peanuts (x) then what is the largest value that these terms can be for a mutually beneficial trade in this economy? d) Find one mutually beneficial trade where the terms of trade are 1 bag of chips (y) per 2 boxes of peanuts (x). Suppose that Sheila and Bruce set up two competitive markets for peanuts and chips. Below you will show that if the price of peanuts (x) is $1 and the price of chips (y) is $2 then the markets for both peanuts and chips will clear.…
Suppose that Bartolo and Emilio spend their incomes on two goods, food (F) and clothing (C). Bartolo's preferences are represented by the utility function: 16 15- U(F,C) 10FC 14- 13 while Emilio's preferences are represented by the utility function: U(F,C) 0.20F2C2 12 11 . 10- With food on the horizontal axis and clothing on the vertical axis, identify on a graph the set of points that give Bartolo the same level of utility as bundle (10,5). Do the same for Emilio. Then, identify the set of bundles that give Bartolo and Emilio the same level of utility as bundle (15,8) 8- 1.) Using the three-point curved line drawing tool, graph an indifference curve for Bartolo that includes bundle (10,5) and that also contains bundles with 4 and 5 units of food. Label the curve U 6- 2.) Using the three-point curved line drawing tool, do the same for Emilio including bundle (10,5) and bundles with 4 and 5 units of food. Label the curve U1 3.) Using the three-point curved line drawing tool, graph an…
2. Assuming Bart and Homer barter (no pun intended), highlight the area of all post-trade allocations both of them prefer to their initial endowment. 3. What determines which particular post-trade allocation they end up with? Marge observes what is going on and intervenes. She (acting as the "Government' in our example) decides that Bart should not have any beer. She makes a lump-sum transfer leading to new initial endowments for Bart (0,21) and Homer (38,0). 4. In your Edgeworth box show the new initial endowments after the lumpsum transfer imposed by Marge. Label this poișt e2. (1 point) 5. After Marge's transfer mark one new possible post-trade allocation (Label this point f.) and draw the associated indifference curves for Bart and Homer. (1 point) 6. Did Marge succeed in her mission to not let Bart have any beer? Why or why not? 7. Add the contract curve to your Edgeworth box. 8. What do all points on the contract curve have in common?
3. State whether the following statements are true, false, or uncertain. Briefly explain your reasoning: (a) If a household is behaving optimally and is at an interior solution, then the marginal utility per unit of each good must be equal. (b) If household A has a utility function ua(ZA1, Z 42) = ZA2 and household B has a utility function ug(rB1,I2) = 2 1n(IB1) + In(r2), then the households will choose different consumption bundles. (c) A household with strictly convex preferences may consume only one of two goods.
1) Suppose that Abel and Eden spend their incomes on two goods, food (F) and clothing (C).Abel’s preferences are represented by the utility function U(F,C)=10FC, while Eden’spreferences are represented by the utility function U(F,C)= 0.20F2C2A) With food on the horizontal axis and clothing on the vertical axis, identify on a graph theset of points that give Abel the same level of utility as the bundle (10, 5). Do the same forEden on a separate graph.B) On the same two graphs, identify the set of bundles that give Abel and Eden the samelevel of utility as the bundle (15, 8).C) Do you think Abel and Eden have the same preferences or different preferences? Explain 2. Graphically show the effect of an increase in price of Coca Cola on the demand of PepsiCola 3. Assume a budget line is drawn for two commodities: X on the x-axis and Y on the y-axis. Ifthe income of the consumer is 120 Birr, the y-intercept is 3, and the slope of the budget lineis -0.5 then determined the price of commodity…
Suppose that the total utility (TU) from consuming (C) per consumption quantity is defined as: TU = Ax Ca (a) Let A=25 and a = 1/4, using Excel to obtain total utility (TU) and Marginal Utility (MU) and graph them (b) Let A=50 and a = 1/4, using Excel to obtain total utility (TU) and Marginal Utility (MU) and graph them (c) Let A=25 and a = 3/4, using Excel to obtain total utility (TU) and Marginal Utility (MU) and graph them
The following table shows the marginal utility per dollar of apples and pears for five consumers: Consumer Marginal Utility Per Dollar Apples Pears Darnell 8 5 Eleanor 7 8 Jacques 6 6 Kyoko 5 4.5 Musashi 4 4 Darnell, Eleanor, and Kyoko are not optimizing over their choice of fruit. In the following table, indicate which fruit each consumer should increase consumption of in order to achieve the optimal fruit consumption bundle. Consumer Apples Pears Darnell Eleanor Kyoko
1. Suppose there are two consumers, A and B. The utility functions of each consumer are given by: UA(X,Y) = X*Y UB(X,Y) = X*Y3 Therefore: • For consumer A: MUX = Y; MUY = X • For consumer B: MUX = Y3; MUY = 3XY2 The initial endowments are: A: X = 10; Y = 6 B: X = 14; Y = 19 show all work a) Suppose the price PY = 1. Calculate the price of X, PX that will lead to a competitive equilibrium. b) How much of each good does each consumer demand in equilibrium? Consumer A’s Demand for X: Consumer A’s Demand for Y: Consumer B’s demand for X: Consumer B’s demand for Y: c)What is the marginal rate of substitution for consumer A at the competitive equilibrium?
2) Which of the following utility functions represent the same preferences? Explain. a) U (x₁, x₂) = X₁ X₂ b) W (x₁, x₂) = 5lnx₁ +5lnx₂ c) V (x₁, x₂) = x₁¹/3x₂ ¹/3 - 0.8 d) Z(x₁, x₂) = 0.5x₁ + 0.5x₂