Please answer question 2 only

a. 1. IN the week following Russia's invasion of Ukraine, the Ruble moved from USD/RUB 30.0248 to USD/RUB 109.6327. How much did the currency move From a Russian's perspective in Foreign currency terms b. From a Russian's perspective in home currency terms C. From a US investor's perspective in Foreign currency terms d. From a US investor's perspective in home currency terms 2. Ukraine has a comparative advantage on the world wheat market. Explain what that statement means