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Economics 314
Suggested Solutions to HW 4
March 2, 2009
1
Problem 1, [Page 5, L4]
1. We know the asset market equilibrium condition is given by:
i
t
=
r
t
1 unit of good: renting gives
1 +
r
t
at the end of
t
so
1 +
r
t
at the
start of
t
+ 1
:
1 unit of good: lending gives
1 +
i
t
at the start of
t
+ 1
:
If
r
t
= 5%
and
i
t
= 4%
, then under these rates everyone borrows
in the bond market and then rent the borrowed good in the rental
market, but no one supplies in the bond market. So demand=supply
is impossible in the bond market.
2. Similarly,
r
t
=4% and
i
t
=
5%, then everyone lends his good in the
bond market to enjoy the better rate of return. So no one rents in
the rental market. So no capital input, which means MPK (which is
r
t
impossible to be less than it .
3.
r
is the return for stocks, and
i
is the return for treasury bonds. In
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 Spring '07
 MBIEKOP
 Macroeconomics, Market Equilibrium

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