You are bullish on Telecom stock. The current market price is $80 per share, and you have $12,000 of your own to invest. You borrow an additional $12,000 from your broker at an interest rate of 6% per year and invest $24,000 in the stock. a. What will be your rate of return if the price of Telecom stock goes up by 15% during the next year? The stock currently pays no dividends. (Negative value should be indicated by a minus sign. Round your answer to the nearest whole number.) b. How far does the price of Telecom stock have to fall for you to get a margin call if the maintenance margin is 30%? Assume the price fall happens immediately. (Round your answer to 2 decimal places.)