Tony and Patty produce skis and snowboards. The first table shows Tony€™s production possibilities and the second table shows Patty€™s production possibilities. Each week, Tony produces 5 snowboards and 40 skis and Patty produces 10 snowboards and 5 skis.

a. Who has a comparative advantage in producing snowboards? And who has a comparative advantage in producing skis?
b. If Tony and Patty specialize and trade 1 snowboard for 1 ski, what are the gains from trade?

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Snowboards (per week) 25 20 Skis (per week) and 10 20 30 40 50 10 and