Use the following data for questions 18 to 21:

Suppose in a certain year, a country has GDP = 2000, consumption C = 1200, the domestic investment I = 400, private savings S = 200, government expenditure G = 350, exports of goods and services X = 200, net primary income (investment income received from a foreign country, as well as compensation) is zero, and net unilateral transfer received is 100.

What is the trade-to-GDP ratio?

What is the level of government tax?

What is the level of GNP?