\fPart a (10 points) Suppose the money supply is M/P and money demand is (M/P)d = L(i, Y). If the money market is in equilibrium, then explain how the price level changes if the real interest rate decreases. Part b (10 points) Now assume that the demand for real money balance (M/P) = 0.6Y-100i, where Y is national income and i is the nominal interest rate. The real interest rate r is fixed at 3 percent by the investment and saving functions. Assume that the inflation rate equals the rate of nominal money growth. If Y is 1,000, M is 100, and the growth rate of nominal money is 2 percent, what will be the nominal interest rate and aggregate price level