Suppose that ZX Inc. is currently selling at $50 per share. You buy 200 shares, using $5,000 of your own money and borrowing the remainder of the purchase price from your broker. The rate on the margin loan is 5%.

Suppose that you sell short 400 shares of ZX Inc., currently selling for $50 per share, what will your rate of return be after one year if ZX Inc. stock is selling at (i) $54, (ii) $50, (iii) $46? Assume that ZX Inc. pays no dividends.