Consider the following information about a risky portfolio that you manage and a risk$-$free asset: E$($rP$)=8\%,\backslash$sigma P$=15\%,$rf$=2\%.$ Your client wants to invest a proportion of her total investment budget in your risky fund to provide an expected rate of return on her overall or complete portfolio equal to $8\%.$ What proportion should she invest in the risky portfolio, P$,$ and what proportion in the risk$-$free asset?