Need help with question 5 please.

5. Consider an economy with constant nominal money supply, constant real output Y = 100, and constant real interest rate r = 0.1. Suppose that the income elasticity of money demand is 0.5 and the interest rate elasticity of money demand is -O.1. (a) By what percentage does the equilibrium price level di'er from its initial value if output increases to Y = 106 but 1' remains at 0.1? (Hint: You can use the - g _ M _ W equation P M [1(er +1r') .) Percentage change in price level: b B what percenta e does the equilibrium price level differ from its initial value 3' g if the interest rate increases to r = 0.11 but Y remains at 100? Percentage change in price level: (c) Suppose that the real interest rate increases to r = 0.11. What would real output have to be for the equilibrium price level to remain at its initial value? Value of real output