Compute GNP

You are given the data below for 2008 for the imaginary country of Amagre, whose currency is the G. Consumption 350 billion G Transfer payments 100 billion G Investment 100 billion G Government purchases 200 billion G Exports 50 billion G Imports 150 billion G Bond purchases 200 billion G Earnings on foreign investments 75 billion G Foreign earnings on Amagre investment 25 billion G Compute GNP