6. Two years ago, you brought 300 shares of Kayleigh Milk Co. For $ 30 a share with a margin of 60 percent. Currently, the Kayleigh stock is selling for $45 a share. Assuming no dividends and ignoring commissions, compute (a) annualized rate of return on this investment if you had paid cash, and (b) your annualized rate of return with the margin purchase.