Suppose News Corporation shares have a beta of

1.47,

whereas CBA shares have a beta of

0.86.

If the risk-free interest rate is

5.7%

and the expected return of the market portfolio is

10.4%,

according to the CAPM,

a. what is the expected return of News Corp shares?

b. what is the expected return of CBA shares?

c.

what is the beta of a portfolio that consists of

70%

News Corp shares and

30%

CBA shares?

d. what is the expected return of a portfolio that consists of

70%

News Corp shares and

30%

CBA shares?