May I have help on this question without someone being ignorant

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

Singer and mcmann are partners in a business. singer’s original capital was $40,000 and mcmann’s was $60,000. they agree to salaries of $12,000 and $18,000 for singer and mcmann respectively and 10% interest on original capital. if they agree to share remaining profits and losses on a 3: 2 ratio, what will mcmann’s share of the income be if the income for the year was $15,000?

Adecision is made at the margin when each alternative considers