Macroeconomics help!

General Motors' European branch, Opel, is one of the largest car companies in Europe. Imagine Opel has European sales of $30 billion in 2003 and tax rate in Europe is 40 percent. Also Assume the tax rate in the United States is 30 percent. How much of U.S. GNP is a result of Opel's sales?
A.$0 Billion
B.$9 Billion
C.$18 Billion
D.$30 Billion
Tutor Answer
