1. An investor invests K10000 in stocks trading at K100. If the price for these shares goes up by 30% and ignoring dividends, what would be the investors expected rate of return? Assuming the investor borrows another K10000 from a broker and invests in the same stocks to buy more of the same shares and the margin loan interest is 9% per year, what will his rate of return be now if the stocks goes up by 30%, ignoring dividends, again ? Suppose the investor only borrows K5000 at the same interest rate of 9% per year, what will the rate of return be if the share price goes up by 30%? If it goes down by 30%, and if it remains unchanged?