You purchase 120 shares for $40 a share ($4,800), and after a year the price falls to $35. Calculate the

You purchase 120 shares for $40 a share ($4,800), and after a year the price falls to $35. Calculate the percentage return on your investment if you bought the stock on margin and the margin requirement was (ignore commissions, dividends, and interest expense):
15 percent. Use a minus sign to enter the amount as a negative value. Round your answer to one decimal place.
55 percent. Use a minus sign to enter the amount as a negative value. Round your answer to one decimal place.
80 percent. Use a minus sign to enter the amount as a negative value. Round your answer to one decimal place.