To determine which price control resulted in a shortage of 300,000 apartments, we need to analyze the data in the table.
The shortage refers to the situation where the quantity demanded exceeds the quantity supplied at a certain price. Let's look for the price where this is the case.
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At a price of $1,000:
- Quantity Demanded: 600,000
- Quantity Supplied: 300,000
- Shortage: 600,000 - 300,000 = 300,000
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At a price of $1,500:
- Quantity Demanded: 500,000
- Quantity Supplied: 500,000
- Shortage: 500,000 - 500,000 = 0 (market equilibrium)
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At a price of $2,000:
- Quantity Demanded: 400,000
- Quantity Supplied: 700,000
- Shortage: 400,000 - 700,000 = -300,000 (surplus)
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At a price of $2,500:
- Quantity Demanded: 300,000
- Quantity Supplied: 900,000
- Shortage: 300,000 - 900,000 = -600,000 (surplus)
From the above analysis, we see that at a price of $1,000, there is indeed a shortage of 300,000 apartments.
A price ceiling is a maximum price that can be charged, which means the price cannot go above that ceiling, leading to shortages if the ceiling is set below the equilibrium price.
In this case, the price control that caused the shortage of 300,000 apartments is:
a price ceiling of $1,000 (or a price ceiling of 1,000 dollars) is correct.
So the correct choice is: a price ceiling of $1,000.