a$.$ A U$.$S$.$ investor obtains Chinese Yuan when the Yuan is worth $$0\mathrm{.}12$ and invests in a one$-$year money market security in China. The interest rate of one$-$year money market security in China is $9$ percent and in the U$.$S$.$ is $2$ percent. At the end of one year, the investor converts the proceeds from the investment back to dollars at the prevailing spot rate of $$0\mathrm{.}1296$ per Yuan. What would be the effective yield to the U$.$S$.$ investor? $(2\mathrm{.}5)$

b$.$ Stanford Corporation arranged a repurchase agreement in which it purchased securities for $$4,000,000$ and will sell the securities back for $$5,000,000$ in $80$ days. What is the yield $($or repo rate$)$ to Stanford Corporation? $(2\mathrm{.}5)$