Old economy traders opened an account to short sell 1,500 shares of internet dreams at $50 per share. the initial margin requirement was 50% (pays no interest). a year later, the price of internet dreams has increased to $65 and the stock has paid a dividend of $1.50 per share. a. what is the remaining margin in the account? b. if the maintenance margin requirement is 30%, will old economy receive a margin call? c. what is the rate of return on the investment

Suppose that a worker in agland can produce either 10 units of organic grain or 2 units of incense per year, and a worker in zenland can produce either 5 units of organic grain or 15 units of incense per year. there are 20 workers in agland and 10 workers in zenland. currently the two countries do not trade. agland produces and consumes 100 units of grain and 20 units of incense per year. zenland produces and consumes 50 units of grain and no incense per year. if each country made the decision to specialize in producing the good in which it has a comparative advantage, then the combined yearly output of the two countries would increase by a. 30 units of grain and 100 units of incense. b. 30 units of grain and 150 units of incense. c. 50 units of grain and 90 units of incense. d. 50 units of grain and 130 units of ince