Question

Suppose that a U.S. worker can produce 1,000 pairs of shoes or 10 industrial robots per year. For simplicity, assume there are no costs other than labor costs and firms earn zero profits. Initially, the U.S. economy is closed. The domestic price of shoes is $30 a pair, so that a U.S. worker can earn $30,000 annually by working in the shoe industry. The domestic price of a robot is $3,000, so that a U.S. worker can also earn $30,000 annually working in the robot industry. Now suppose that the U.S. opens trade with the rest of the world. Foreign workers can produce 500 pairs of shoes or 1 robot per year. The world price of shoes after the U.S. opens its markets is $10 a pair, and the world price of robots is $5,000. What do foreign workers earn annually, in dollars?

          Suppose that a U.S. worker can produce 1,000 pairs of shoes or 10 industrial robots per year. For simplicity, assume there are no costs other than labor costs and firms earn zero profits. Initially, the U.S. economy is closed. The domestic price of shoes is $30 a pair, so that a U.S. worker can earn $30,000 annually by working in the shoe industry. The domestic price of a robot is $3,000, so that a U.S. worker can also earn $30,000 annually working in the robot industry.     Now suppose that the U.S. opens trade with the rest of the world. Foreign workers can produce 500 pairs of shoes or 1 robot per year. The world price of shoes after the U.S. opens its markets is $10 a pair, and the world price of robots is $5,000.
What do foreign workers earn annually, in dollars?

Added by Meghan B.

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