Explanation : Gross Domestic Product (GDP) is an estimated value of the total worth of a country's production and services, within its boundary, by its nationals and foreigners, calculated, over the course on one year. GDP = consumption + investment + (government spending) + (exports – imports). Gross national product (GNP) is an estimated value of the total worth of production and services, by citizens – of a country, on its land or on foreign land, calculated over the course on one year. GNP = GDP + NR (Net income from assets abroad (Net Income Receipts) So, if NR equals zero, GDP = GNP. In other words, when exports equal imports, then GDP = GNP.....Read more