The government is considering variou
s subsidy and incentive programs to induce low
-
income families to live in better quality housing than they would otherwise live in. Three plans
are
i.
Income subsidy: provide additional income I to a family that can be spent in any way.
ii.
Price subsidy: pay a fixed percentage
p
of a family’s rent.
iii.
Voucher: pay an amount
s
toward a family’s rent, provided the normal rent is at least R.
Suppose commodities can be separated into housing (in amount x) and a general commodity
representing all ot
her goods (in amount z). Suppose a family has uti
l
ity function
U(x,z) = z
4/5
x
1/5
And a monthly income of $500.
The government wishes this family to live in a house that rents for at
least $150. Suppose the prices are each $1.00 per unit.
a.
Without any subsid
y, how much will the family spend on rent?
b.
Under each of the plans above, how much subsidy would be required to induce the family to live
in a $150 house?
A) utility maximizing condition:
MUx/Px= MUz/Pz
0.2*z^0.8/(x^0.8)=0.8*x^0.2/(z^0.2)
z/x=4
z=4x
Budget constraint:,
500=4x+x=5x
X=500/5=100
Z=4x=100*4=400
B) optimal condition:
Z=4x
M=4x+x
M=5x
Required x=150
M=5*150=750
Plan a required, government to give additional 250 money to him.
Plan b) Utility maximizing condition:
MUx/px= MUz/Pz
0.2*z^0.8/(px*x^0.8)=0.8*x^0.2/(z^0.2)
z/x=4px
Z=4*x*px
Budget constraint;,
500=4x*px+px*x
Required x=150
500=4*150*px+px*150
500=600px+150px
Px=500/750=0.67
Required percentage Decrease in price for Consumer=(1-0.67)/1*100=33%
So government needs to pay 33% of the rent price.
Plan 3) government needs to pay 50$ voucher.
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