Question 1

What would happen to the equilibrium price and quantity of lattés if coffee shops began using a machine that reduced the amount of labor necessary to produce steamed milk,which is used to make lattés,and scientists discovered that coffee prevents heart attacks?

Accepted Answer

The machine reduces production costs, increasing supply, while the health benefit discovery increases demand. The equilibrium quantity will increase, but the effect on price is uncertain due to opposing supply and demand shifts.

Question 2

Consider the market for new DVDs.If DVD players became cheaper,buyers expected DVD prices to fall next year,used DVDs became more expensive,and DVD production technology improved,then the equilibrium price of a new DVD would

Accepted Answer

The equilibrium price could change in any direction because cheaper DVD players and improved production technology increase supply, while expectations of falling prices decrease demand. The net effect on price depends on the relative magnitudes of these shifts.

Question 3

Saddle shoes are not popular right now,so very few are being produced.If saddle shoes become popular,then how will this affect the market for saddle shoes?

Accepted Answer

When saddle shoes become popular, the demand curve will shift to the right, leading to a shortage at the current price. This will cause the price to increase, decreasing quantity demanded and increasing quantity supplied, resulting in a new market equilibrium at a higher price and higher quantity.

Question 4

New cars are normal goods.What will happen to the equilibrium price of new cars if the price of gasoline rises,the price of steel falls,public transportation becomes cheaper and more comfortable,auto-workers accept lower wages,and automobile insurance becomes more expensive?

Accepted Answer

The answer of New cars are normal goods.What will happen...

Question 5

What would happen to the equilibrium price and quantity of lattés if the cost of producing steamed milk,which is used to make lattés,rises?

Accepted Answer

The increase in cost of producing steamed milk will shift the supply curve to the left, meaning that fewer lattés will be supplied at each price level. This will increase the equilibrium price and decrease the equilibrium quantity. Therefore, the best choice is C.

Question 6

If scientists discover that steamed milk,which is used to make lattés,prevents heart attacks,what would happen to the equilibrium price and quantity of lattés?

Accepted Answer

The discovery that steamed milk prevents heart attacks would likely increase the demand for lattés, as people seek the health benefits. This increased demand would push the equilibrium price and quantity of lattés higher.

Question 7

What would happen to the equilibrium price and quantity of peanut butter if the price of peanuts went up,the price of jelly fell,fewer firms decided to produce peanut butter,and health officials announced that eating peanut butter was good for you?

Accepted Answer

The increase in the price of peanuts (an input) and fewer firms producing peanut butter would decrease supply, raising the price. The fall in the price of jelly (a complement) and positive health news would increase demand, also raising the price. The combined effects on quantity are ambiguous due to opposing supply and demand shifts.

Question 8

Consider the market for portable air conditioners in equilibrium.When a heat wave strikes the equilibrium price

Accepted Answer

A heat wave increases the demand for portable air conditioners, leading to an increase in both the equilibrium price and quantity as the market adjusts to the higher demand.

Question 9

New oak tables are normal goods.What would happen to the equilibrium price and quantity in the market for oak tables if the price of maple tables rises,the price of oak wood rises,more buyers enter the market for oak tables,and the price of the glue used in the production of the new oak tables increased?

Accepted Answer

The rise in the price of maple tables and more buyers entering the market increase demand for oak tables, pushing the price up. However, the rise in the price of oak wood and glue increases production costs, reducing supply, which also pushes the price up. The effect on quantity is ambiguous due to opposing demand and supply influences.

Question 10

What would happen to the equilibrium price and quantity of lattés if coffee shops began using a machine that reduced the amount of labor necessary to produce steamed milk,which is used to make lattés,and scientists discovered that lattés cause heart attacks?

Accepted Answer

The decrease in the amount of labor necessary to produce steamed milk would lead to a decrease in the cost of producing lattés, which would shift the supply curve to the right. This would lead to a decrease in the equilibrium price of lattés. However, the discovery that lattés cause heart attacks would shift the demand curve to the left, which would decrease the equilibrium quantity of lattés sold. The effect on equilibrium quantity is ambiguous because the decrease in price due to the decrease in production costs may increase demand, but the decrease in demand due to health concerns may decrease it. Therefore, the equilibrium quantity could potentially increase, decrease, or remain the same.

Question 11

The market for diamond rings is closely linked to the market for high-quality diamonds.If a large quantity of high-quality diamonds enters the market,then the

Accepted Answer

When a large quantity of high-quality diamonds enters the market, the supply of diamond rings increases, shifting the supply curve to the right. This creates a surplus at the current price, leading to a decrease in price. As the price decreases, the quantity demanded increases and the quantity supplied decreases until a new equilibrium is reached at a lower price and higher quantity.

Question 12

If consumers view cappuccinos and lattés as substitutes,what would happen to the equilibrium price and quantity of lattés if the price of cappuccinos falls?

Accepted Answer

If the price of cappuccinos falls, consumers will likely buy more cappuccinos and fewer lattés, leading to a decrease in demand for lattés. This decrease in demand will cause both the equilibrium price and quantity of lattés to decrease.

Question 13

What will happen to the equilibrium price and quantity of new cars if the price of gasoline rises,the price of steel rises,public transportation becomes cheaper and more comfortable,and auto-workers negotiate higher wages?

Accepted Answer

The increase in gasoline prices and improvements in public transportation make owning and using cars less attractive, reducing demand. The rise in steel prices and higher wages for auto-workers increase production costs, reducing supply. Both effects lead to a decrease in quantity. The price effect is ambiguous because the demand and supply shifts have opposing effects on price.

Question 14

Which of the following sets of events must cause an increase in the price of a new house?

Accepted Answer

Higher wages for carpenters and higher wood prices will increase the cost of building new houses, which will lead to an increase in the price of a new house. Increases in consumer incomes will increase the demand for houses, which in turn will also increase the price. Higher apartment rents may also encourage people to consider buying a house instead, which will also increase demand and, therefore, prices. Increases in population will lead to greater demand for housing, again driving up prices. Expectations of higher house prices in the future may also lead to an increase in demand and prices as people rush to buy before prices get too high.

Question 15

What would happen to the equilibrium price and quantity of lattés if the cost to produce steamed milk,which is used to make lattés,increased,and scientists discovered that lattés cause heart attacks?

Accepted Answer

An increase in production costs shifts the supply curve left, reducing quantity and increasing price. A negative health discovery shifts the demand curve left, reducing both price and quantity. The combined effect decreases quantity, but the price effect is ambiguous.

Question 16

What will happen to the equilibrium price of new textbooks if more students attend college,paper becomes cheaper,textbook authors accept lower royalties,and fewer used textbooks are sold?

Accepted Answer

The equilibrium price change is ambiguous because there are multiple factors affecting both supply and demand. Increased college attendance raises demand, potentially increasing price. Cheaper paper and lower royalties reduce production costs, increasing supply and potentially lowering price. Fewer used textbooks increase demand for new ones, potentially raising price. The net effect depends on the relative magnitudes of these changes.

Question 17

Music compact discs are normal goods.What will happen to the equilibrium price and quantity of music compact discs if musicians accept lower royalties,compact disc players become cheaper,more firms start producing music compact discs,and music lovers experience an increase in income?

Accepted Answer

The decrease in royalties for musicians and the decrease in the cost of production due to more firms entering the market will lead to a decrease in the cost of making music compact discs. This will cause the supply curve to shift to the right, causing an increase in quantity and a decrease in price. Additionally, the increase in income for music lovers will lead to an increase in demand for music compact discs, causing another shift in demand to the right. This will cause a further increase in quantity and an increase in price. The effect on price is ambiguous, but the effect on quantity will definitely rise. Therefore, the best answer is D.

Question 18

What would happen to the equilibrium price and quantity of lattés if coffee shops began using a machine that reduced the amount of labor necessary to produce them?

Accepted Answer

When the cost of production decreases as a result of reduced labor expenses, coffee shops will be willing to supply more lattés at a lower price. This will cause the equilibrium price of lattés to decrease, and the equilibrium quantity of lattés to increase. Therefore, the correct answer is D: the equilibrium price would decrease, and the equilibrium quantity would increase.

Question 19

Pens are normal goods.What will happen to the equilibrium price of pens if the price of pencils rises,consumers experience an increase in income,writing in ink becomes fashionable,people expect the price of pens to rise in the near future,the population increases,fewer firms manufacture pens,and the wages of pen-makers increase?

Accepted Answer

The equilibrium price of pens will rise due to several factors: increased consumer income, fashion trends favoring ink, expected future price increases, population growth, reduced supply from fewer manufacturers, and higher production costs due to increased wages.

Question 20

What will happen to the equilibrium price and quantity of traditional camera film if traditional cameras become more expensive,digital cameras become cheaper,the cost of the resources needed to manufacture traditional film falls,and more firms decide to manufacture traditional film?

Accepted Answer

The increase in price of traditional cameras and decrease in price of digital cameras will lead to a decrease in demand for traditional camera film. As the cost of the resources needed to manufacture traditional film falls, supply will increase. With more firms entering the market, competition will increase, and price will fall. However, the effect on quantity is ambiguous as it depends on the magnitude of the change in supply and demand.

Quiz 4: The Market Forces of Supply and Demand: Supply and Demand Together