1. You purchased 450 shares of stock at a price of 49 per share on 55 percent margin. If the maintenance margin is 35 percent, what is the critical stock price?

2. You purchased 600 share for $45.5 each, received a dividend of $0.89 per share, and sold the stock after one year for $38.5 a share. What was your dividend yield on this investment? What was your total dollar return? Your percentage return.

3. You purchased 2,000 shares of stock at $55 a share. The stock is currently selling for $62 a share. The initial margin was 70 percent and the maintenance margin is 30 percent. What is your current margin position? And what if stock is currently seeling for $53 per share instead of $62.