Problem $12-6$ Market Model

The following three stocks are available in the market:

Assume the market model is valid.

a$.$ The return on the market is $15$ percent and there are no unsystematic surprises in the

returns. What is the return on each stock? $($Do not round intermediate calculations

and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ Assume a portfolio has weights of $30$ percent Stock A$,45$ percent Stock B$,$ and $25$

percent Stock C$.$ The return on the market is $15$ percent and there are no unsystematic

surprises in the returns. What is the return on the portfolio? $($Do not round

intermediate calculations and enter your answer as a percent rounded to $2$ decimal

places, e$.$g$.,32\mathrm{.}16.)$