a.

Investment equals $2,125 million in your country. Private saving is $2,750 million and the government deficit is $450 million. Based on this information you know that your trade balance equals $______ million.

b.

Your country's trade balance is $455 million. Private saving is $3,000 million and the government deficit is $900 million. Based on this information you know that investment equals $______ million.

c.

In2021, the U.S. is running a trade deficit of $500 billion. The expected surplus in2023is $510 billion. Assuming the interest rate is a constant 1.5%, calculate the trade balance in2022such that the present discounted value of the sum of trade deficits and surpluses (from 2021 to 2023) is zero.

Use a spreadsheet for your calculations and round your answer to the nearest $ billion.

Note: Enter a trade surplus is a positive number and the trade deficit as a negative number.