# Having Difficulty With Sharpe Ratio and Optimal Portfolio

I have begun by using such equations as:

By finding the $Rp$ and $\sigma p$ with the weighted values, and then I followed the equation using a value of $.02$ for the fixed asset, $rf$, but this comes up with a value that is not correct. The answer apparently is $0.5813$, but I cannot get to this value. My values are in the $0.300$ range.