If Country A can produce 10 cars or 5 trucks and Country B can produce 4 cars or 8 trucks, which country has a comparative advantage in producing trucks?

To determine which country has a comparative advantage in producing trucks, we need to look at how many trucks each country can produce compared to cars. Country A can make 5 trucks or 10 cars, meaning for every truck it gives up, it can make 2 cars. On the other hand, Country B can produce 8 trucks or 4 cars, so for each truck it gives up, it only gives up half a car. Since Country B sacrifices fewer cars for each truck it produces, it has a comparative advantage in making trucks. Therefore, Country B should focus on producing trucks, while Country A should focus on cars.