a. cambridge cash balance approach, money demand = kPY and from fishers equation of exchange that MV=PT comparing both the equationgs k=1/v.
now given the money demand function nomindal money demand = and k=MD/PY
on solving we get k= and from both versions of quantity theory of money k=1/v hence velocity of money = . hence velocity of money depends on the nominal interest rates level since nominal interest rate represents the opprtunity cost associated with holding money
b. if i=4% then v= =1
c. at equilibrium money demand (qs) = money supply
given y=1000, money supply=1200 , nominal interest at 4% we get MD= 0.2PY/i1/2
1200 = 0.2*P*1000/0.2 HENCE PRICE LEVEL = 1.2
d. fisher equation on interest rates is r=i-inflation level hence from this nominal interest would be
i=r+inflation thus a 5% increase in inflation leads to a 5% rise in nominal interest rate hence the new nominal interest rate = 9%
e. new velocity of money =5*(0.09)1/2 = 1.5
f. 1200=0.2*P*1000/(0.09)1/2 hence price level = 1.8
g. price level=1.2
M=0.2*1.2*1000/0.3
M=800. By reducing the money supply from 1200 to 800 the price levelremains at 1.2.
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