Assume Russia and the U.S. are the only two countries in the world. Let Russia be the home country and the US the foreign country and RUBLE/USD is the exchange rate. Suppose the law of one price holds for the traded goods and the share of non-traded goods in price indices is n=0.4 in both countries. Answer the following questions. a) Suppose that there is 4 % growth per year in tradable sector and 1% per year in non-tradable sector in Russia. In the US productivity growth at 2% in both sectors. What is the change in real exchange rate and what happens to Russian Ruble? (5 points)