Problem 3-11 Suppose that Xtel currently is selling at $64 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 7%. a. What is the percentage increase in the net worth of your brokerage account if the price of Xtel immediately changes to: () $69.44; (1) $64; (ii) $58.56? 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 "O" wherever required. Negative values should be indicated by a minus sign. Round your answers toecimal places.) Answer is complete and correct. 13.60 % ii. Percentage gain Percentage gain Percentage gain % (13.60) % b. If the maintenance margin is 25%, how low can Xtel's price fall before you get a margin call? (Round your answer to 2 decimal places.) Answer is complete but not entirely correct