Helene -a bullish investor- just opened a brokerage account at STAR investment company. Her decision was to trade on Sephora Co, stocks. She decided to buy 300 shares at the current stock price of $120/share. The broker advised her to borrow at 6% interest rate and additionally required the following margin requirements: Margin Requirement rates Initial 80% Maintenance 30% 4. What would be the rate of return on her investment *