Answer:
Both the countries will gain from trade if the price of trade is 6 pairs of jeans per pane of stained glass and 9 pairs of jeans per pane of stained glass.
Step-by-step explanation:
Spain has an opportunity cost of producing a pane of stained glass
= 4 pairs of jeans
Sweden has an opportunity cost of producing a pane of stained glass
= 10 pairs of jeans
Spain has an opportunity cost of producing a pair of jeans
=
= 0.25 panes of stained glass
Sweden has an opportunity cost of producing a pair of jeans
=
= 0.1 panes of stained glass
A country is said to be enjoying a comparative advantage if it can produce a good at a lower opportunity cost.
Spain has a comparative in producing stained glass, while Sweden has a comparative advantage in producing jeans.
Spain will gain from trade if it is getting more than 4 pairs of jeans for each pane of stained glass. While Sweden can gain from trade if it is getting more than 0.1 panes of stained glass for each pair of jeans.
Both the countries will gain from the trade if the price of trade is 6 pairs of jeans per pane of stained glass and 9 pairs of jeans per pane of stained glass.
Spain will not accept 3 pairs of jeans per pane of stained glass because it will not cover the opportunity cost. Sweden will not pay 18 pairs of jeans per pane of stained glass.