Use the equation of exchange to calculate the following values. Instructions: Round your answer to one decimal place. a. Nation A has a price level of 50, a money supply of $12,000, and real GDP of $1,200. What is the velocity of money? b. Nation B has a velocity of money of 12, a money supply of $20,000, and real GDP of $2,500. What is the price level? c. Nation C has a price level of 120, a velocity of money of 10, and a money supply of $24,000. What is the real GDP? $