Macroeconomics 2nd Edition by Campbell McConnell ,Stanley Brue,Sean Flynn

Exercise 7

Suppose that annual output in year 1 in a 3-good economy is 3 quarts of ice cream, 1 bottle of shampoo, and 3 jars of peanut butter. In year 2, the output mix changes to 5 quarts of ice cream, 2 bottles of shampoo, and 2 jars of peanut butter. If the prices in both years are $4 per quart for ice cream, $3 per bottle of shampoo, and $2 per jar of peanut butter, what was the economy's GDP in year 1? What was its GDP in year 2?