9. The market for peanut butter is given by the following demand and supply curves: P=30-1/2 QD P=5+20¹ and a. Calculate the equilibrium price and quantity of peanut butter and show these on a properly labeled supply and demand diagram for peanut butter. b. What is the consumer and producer surplus in the market? Calculate and indicate these on your graph from part (a). c. Is the market economically efficient? In one sentence or less, how do you know?

Principles of Macroeconomics (MindTap Course List)
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Chapter7: Consumers, Producers, And The Efficiency Of Markets
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9. The market for peanut butter is given by the following demand and supply curves:
P= 30-1/2 QD
and
P=5+20s
a. Calculate the equilibrium price and quantity of peanut butter and show these on a properly
labeled supply and demand diagram for peanut butter.
b. What is the consumer and producer surplus in the market? Calculate and indicate these on
your graph from part (a).
I
C. Is the market economically efficient? In one sentence or less, how do you know?
Now assume that the price of jelly (the second ingredient in the ever-popular peanut butter and jelly
(PBJ) sandwich) decreases.
d. How does this affect the market for peanut butter? Draw these changes on your supply and
demand diagram from part (a).
e.
If the price were to remain at the previous equilibrium price, indicate the quantity of peanut
butter bought and sold in the market as Qu.
f. Indicate consumer surplus and producer surplus on your graph. (You do not need to
calculate anything here).
Is the market economically efficient? In one sentence or less, how do you know?
h. Explain how the market will adjust to the new equilibrium.
10. Nate, Ellie, and Marquis are all planning to go to the Taylor Swift Eras tour. Marquis is a huge Taylor
1000
Pil
Transcribed Image Text:9. The market for peanut butter is given by the following demand and supply curves: P= 30-1/2 QD and P=5+20s a. Calculate the equilibrium price and quantity of peanut butter and show these on a properly labeled supply and demand diagram for peanut butter. b. What is the consumer and producer surplus in the market? Calculate and indicate these on your graph from part (a). I C. Is the market economically efficient? In one sentence or less, how do you know? Now assume that the price of jelly (the second ingredient in the ever-popular peanut butter and jelly (PBJ) sandwich) decreases. d. How does this affect the market for peanut butter? Draw these changes on your supply and demand diagram from part (a). e. If the price were to remain at the previous equilibrium price, indicate the quantity of peanut butter bought and sold in the market as Qu. f. Indicate consumer surplus and producer surplus on your graph. (You do not need to calculate anything here). Is the market economically efficient? In one sentence or less, how do you know? h. Explain how the market will adjust to the new equilibrium. 10. Nate, Ellie, and Marquis are all planning to go to the Taylor Swift Eras tour. Marquis is a huge Taylor 1000 Pil
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