Suppose that in a 50-year time period, real output increases by
700% and the money
supply increases by 300%. According to the quantity theory, what
happens to the price
level?
(a) Decreases by 100%
(b) Decreases by 50%
(c) Stays the same, because velocity adjusts endogenously
(d) Increases by 100%
(e) Increases by 400%
pls explain the reason.
Answer. (c) stays the same, because velocity adjusts endogenously
Explanation. Quantity theory of money is MV=PQ, where M is money supply, V is velocity, P are prices and Q is real output. M increases by 300%, and Q increases by 700%. Now the sum of increases should be the same on both sides. So no option is given as P decreases by 400%. So only option c is correct, because velocity will adjust and increase by 400% to equalise the growth on both sides of equation.
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