7. Suppose Stock XYZ is selling at S30 per share. You buy 1,000 shares, using $18,000 of your own money, and borrow the remainder. The rate on the margin loan is 8% per year a. What is your total return on the investment if in 12 months, the price changes to $27, 530, 533 per share b. If the maintenance margin is 25%, at what price will you get a margin call? 1. What if you only used 10,000 of your own money