Question

Suppose MV = 60 & PQ = 120. Suppose Q and V are held constant. This means ________.

A. both M & V must double
B. V must double
C. M must double

Answer 1

The correct answer is C. M must be doubled. The quantity theory of money assumes that both V and Q are stable and hence will be constant. Therefore, when V an Q are constant in the equation MV=PQ, M will be directly proportional to P. Using that theory M must be double for it to be equal to P.