Please answer both of these and show work. I've tried and can't get it. The correct answers are

in red.

4. At the beginning of the year the exchange rate between the Brazilian Real ORS and the US. dollar is 2 Reals per dollar. Over the year Brazilian inflation is 18% and U.S. inflation is 4%. What should the exchange rate be (dollars per Real) at the end of the year? CHint: Purchasing Power Parity) (5 pts.) S0.44/BRL 5. Assume the following bid and ask rates of a Singapore dollar for two banks as shown below: Ask Bank X $0.41 Bank Y $0.42 $0.425 Given this information, what would be your gain if you use SI,000,000 and execute pts)