$.$ Suppose that all stocks can be grouped into two mutually exclusive portfolios $($with each stock appearing in only one portfolio$)$: G$-$Stocks and V$-$Stocks. Assume that these two portfolios are equal in size $($market value$),$ the correlation of their returns is equal to $0\mathrm{.}6,$ and the portfolios have the following characteristics:

Expected return Volatility

V$-$Stocks $12\%14\%$

G$-$Stocks $15\%24\%$

The risk$-$free rate is $3\mathrm{.}5\%.$ Then the expected return for the market portfolio which is a $50-50$ combination of V$-$Stocks and G$-$Stocks is$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ and using this expected return on the market portfolio and the risk$-$free interest rate, the Sharpe ratio is $\_\_\_\_\_\_\_\_.$