Problem 1: You purchase 100 shares for $50 a share ($5,000), and after a year the price rises to $60. What will be the percentage return on your investment if you bought the stock on margin and the margin requirement was:
(a) 25 percent,
(b) 50 percent, and
(c) 75 percent? (Ignore commissions, dividends, and interest expense.)
Problem 2: Repeat Problem 1 to determine the percentage return on your investment but in this case, suppose the price of the stock falls to $40 per share. What generalization can be inferred from your answers to Problems 1 and 2?