Ginny and Lucia are roommates. They spend most of their time studying (of course), but they leave some time for their favorite activities: making pizza and brewing root beer. Ginny takes 3 hours to brew a gallon of root beer and 2 hours to make a pizza. Lucia takes 7 hours to brew a gallon of root beer and 5 hours to make a pizza. Ginny's opportunity cost of brewing a gallon of root beer is1 1/2 pizzas , and Lucia's opportunity cost of brewing a gallon of root beer is1 2/5 pizzas .
who has an absolute advantage in brewing root beer, and who has a comparative advantage in brewing root beer.