ECON 3501 Temple University Consumer Choice Worksheet

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Economics

ECON 3501

Temple University

ECON

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Assignment 1: Consumer Choice Econ3501, Spring 2020 Moritz Ritter Temple University Question 1a. Jamie likes consuming beer and wine. He does not consume anything else (unfortunately for his liver). Let xb be the liters of beer and xw the liters of wine he consumes per week. His preferences can be represented by a utility function given by: u(xb , xw ) = xb + xw . a. Find and draw the indifference curve that passes through the bundle (xb = 4, xw = 6). Find and draw the indifference curve that passes through the bundle (xb = 8, xw = 12). b. What is Jamie’s marginal rate of substitution? Is the MRS diminishing along his indifference curves? c. Rank the following 4 bundles: (9,3); (4,6); (5,5); (12,1) Question 1b. Redo Question 1a with u(xb , xw ) = min {xb ; xw }. Question 4. Max’s preferences over beer and chicken wings are represented by the following utility function √ u(b, w) = 4 b + 2w; where b denotes the quantity of beer and w the quantity of wings consumed by Max. The marginal utilities of beer (M Ub ) and wings (M Uw ) are given by M Ub = M Uw = 2 √ b 2 Max’s parents give him a monthly allowance of I = 100, the price of beer is pb = 10 and the price of wings is pw = 20. a. Draw Max’s budget line in a well-labeled diagram. Also draw the indifference map associated with these preferences in the same diagram. (Put beer on the x- and wings on the y-axis.) b. What is Max’s optimal consumption bundle? Explain why Max should not spend all his money on beer. c. Assume that the price of wings increases to pew = 40. What is Max’s optimal consumption bundle now? Explain. 1
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Question 1
a.

𝑚𝑎𝑟𝑔𝑖𝑛𝑎𝑙 𝑢𝑡𝑖𝑙𝑖𝑡𝑦 𝑜𝑓 𝑏𝑒𝑒𝑟

b. Marginal rate of substitution = 𝑚𝑎𝑟𝑔𝑖𝑛𝑎𝑙 𝑢𝑡𝑖𝑙𝑖𝑡𝑦 𝑜𝑓 𝑤𝑖𝑛𝑒
𝑑𝑦

MRS= 𝑑𝑥
8...


Anonymous
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