b) Akai has a portfolio of three assets. Assuming he invests 50 percent of its money in asset A with 10 percent rate of return, 30 percent in asset B with a rate of return of 20 percent, and the rest in asset C with 30 percent rate of return.

What is the expected return for the portfolio?[4]c) Nico owns 100 shares of stock X which has a price of R12 per share and 200 shares of stock Y which has a price of R3 per share.What is the proportion of Nico's portfolio invested in stock X?[3]d) Given that the expected return on asset X is 20 percent, its beta is 1.5, and the risk free rate is 5 percent;What is the expected market return?[4]