A trader has purchased 200 shares of a non-dividend-paying firm on margin at
a price of $50 per share. The leverage ratio is 2.5. Six months later, the trader
sells these shares at $60 per share. Ignoring the interest paid on the borrowed
amount and the transaction costs, what was the return to the trader during the
six-month period?
A. 20 percent..
B. 33.33 percent.
C. 50 percent.

——————C
The current price of a stock is $25 per share. You have $10,000 to invest. You
borrow an additional $10,000 from your broker and invest $20,000 in the stock.
If the maintenance margin is 30 percent, at what price will a margin call first
occur?
A. $9.62.
B. $17.86.
C. $19.71.
____________B


求具体计算过程 谢谢啦~