Suppose that Xtel currently is selling at $68 per share. You buy 500 shares using $20,000 of your own money, borrowing the remainder of the purchase price from your broker. The rate on the margin loan is 5%. o. What is the percentage increase in the net worth of your brokerage account if the price of Xtel immediately changes to: (i) $72.42; (ii) $68; (iii) $63.58 ? What is the relationship between your percentage return and the percentage change in the price of Xtel? (Leave no cells blank - be certain to enter " 0 " wherever required. Negative values should be indicated by a minus sign. Round your answers to 2 decimal ploces.) b. If the maintenance margin is 25%, how low can Xtel's price fall before you get a margin call? (Round your onswer to 2 decimol ploces.) answer to 2 decimal places.) d. What is the rate of return on your margined position (assuming again that you invest $20,000 of your own money) if Xiel is selling after 1 year at: (i) $72.42; (ii) $68; (iii) $63.58 ? What is the relationship between your percentage return and the percentage change in the price of Xtel? Assume that Xtel pays no dividends. (Negative values should be indicoted by a minus sign. Round your onswers to 2 decimal places.) e. Continue to assume that a year has passed. How low can Xtel's price fall before you get a margin call? (Round your answer to 2 decimal ploces.)