18. Aisling eats turkey and bread sandwiches for lunch and regards turkey and bread as perfect complements. For every 2 slices of bread (B), she requires exactly 3 slices of turkey (T). Aisling has $14 to spend on bread and turkey, each slice of bread costs 50 cents, and each slice of turkey costs 25 cents. Her utility function is and her optimal bundle is

Microeconomic Theory
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Chapter3: Preferences And Utility
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18. Aisling eats turkey and bread sandwiches for lunch and regards turkey and bread as perfect
complements. For every 2 slices of bread (B), she requires exactly 3 slices of turkey (T). Aisling has
$14 to spend on bread and turkey, each slice of bread costs 50 cents, and each slice of turkey costs
25 cents. Her utility function is and her optimal bundle is
a. U min(2B,3T); 14 slices of bread and 21 slices of turkey
b. U min(3B,2T); 14 slices of bread and 21 slices of turkey
c. U-min(2B,3T); 16 slices of bread and 24 slices of turkey
d. U min(3B,2T); 16 slices of bread and 24 slices of turkey
19. Kara's preferences for ravioli (R) and tortellini (T) are described by the utility function,
U(R, T) = 5R + 4T. Suppose Kara has $12 to spend on these pastas, and the price of a ravioli is $1.
She is willing to trade
raviolis for each additional tortellini, to remain as well off. She
will maximize her utility by consuming only tortellini if the price of tortellini is less than
a. 4/5; $0.80
b. 4/5; $1.25
c. 5/4; $0.80
d.
5/4; $1.25
e. 5/4; $1
20. For which of the following utility functions are corner solutions not possible? (Select all that
apply.)
a. U(X,Y)= 3X + 4Y
b. U(X,Y)= X2/3y1/3
c. U(X,Y)= 3 In(X) + 5Y
d. U(X,Y)= 2X+Y²
e. U(X,Y)= min (3X, 4Y)
Transcribed Image Text:18. Aisling eats turkey and bread sandwiches for lunch and regards turkey and bread as perfect complements. For every 2 slices of bread (B), she requires exactly 3 slices of turkey (T). Aisling has $14 to spend on bread and turkey, each slice of bread costs 50 cents, and each slice of turkey costs 25 cents. Her utility function is and her optimal bundle is a. U min(2B,3T); 14 slices of bread and 21 slices of turkey b. U min(3B,2T); 14 slices of bread and 21 slices of turkey c. U-min(2B,3T); 16 slices of bread and 24 slices of turkey d. U min(3B,2T); 16 slices of bread and 24 slices of turkey 19. Kara's preferences for ravioli (R) and tortellini (T) are described by the utility function, U(R, T) = 5R + 4T. Suppose Kara has $12 to spend on these pastas, and the price of a ravioli is $1. She is willing to trade raviolis for each additional tortellini, to remain as well off. She will maximize her utility by consuming only tortellini if the price of tortellini is less than a. 4/5; $0.80 b. 4/5; $1.25 c. 5/4; $0.80 d. 5/4; $1.25 e. 5/4; $1 20. For which of the following utility functions are corner solutions not possible? (Select all that apply.) a. U(X,Y)= 3X + 4Y b. U(X,Y)= X2/3y1/3 c. U(X,Y)= 3 In(X) + 5Y d. U(X,Y)= 2X+Y² e. U(X,Y)= min (3X, 4Y)
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