Question

In: Economics

The monthly demand for one-bedroom apartment rentals is given by P = 2000 - 10Q, the...

The monthly demand for one-bedroom apartment rentals is given by P = 2000 - 10Q, the supply is given by 500 + 20Q, where P is monthly rent per apartment, and Q is thousands of apartments. Suppose the city council imposes a rent ceiling of $1000. The rent ceiling will change renters' surplus from $12.5 million to $ million. It will change owners' surplus from $25 million to $ million. It will create a deadweight loss equal to $ million. (Express your answer in millions of dollars, and round the final answer to one decimal place. For example, if the answer is 2.678 million, enter 2.7 in the blank.

Solutions

Expert Solution

Demand: P=2000-10Q

X Intercept ( keeping P=0)= 200

Y intercept (keeping Q=0) = 2000

Supply : P=500+20Q

X intercept (keeping P=0) = -25

Y intercept (keeping Q=0) = 500

At Equilibrium demand= supply

2000-10Q=500+20Q

1500= 30Q

Q*= 50

P*= 2000-10Q or 500+20Q

P*= 1500

1) New renter's surplus= Yellow region

Renter's surplus= Area of triangle ABC + Area of rectangle CBEI

•Area of triangle ABC= (1/2)*base*height

base= 25

Height= (2000-1750)= 250

Area of triangle ABC= (1/2)*25*250 = 3125

•Area of rectangle CBEI= Length* breadth

Length= 25

Breadth= (1750-1000) = 750

Area of rectangle CBEI= 25*750 = 18750

Total renters surplus= 3125+18750= 21875 = 21.875 or 22 miliion

•Rent ceiling changes renter's surplus from 12.5 million to 22 million

2) New owner's surplus= Red region

New owner's surplus= Area of triangle EFI

Area of triangle EFI= (1/2)*base*height

Base= 25

Height= 1000-500= 500

New owner's surplus= (1/2)*25*500= 6250= 6.25 or 6 million

• Rent ceiling changes owner surplus from 25 to 6 million

3) Dead weight loss= Green region

Dead weight loss= Area of triangle BDE

Area of triangle BDE= (1/2)*base*height

Base= (1750-1000) = 750

Height= (50-25) = 25

Dead weight loss= (1/2)*750*25= 9375 or 9.375 or 9 million


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