Suppose that a country has no public debt in year 1 but experiences a budget deficit of $30 billion in year 2,a budget surplus of $20 billion in year 3, and a budget deficit of $2 billion in year 4.

Instructions:In part a, enter your answer as a whole number. For the absolute size of the public debt, enter your answer as a positive number. In part b, round your answer to 2 decimal places.

a. What is the absolute size of its public debt in year 4?

$(how much) billion

b. If its real GDP in year 4 is $104 billion, what is this country's public debt as a percentage of real GDP in year 4?

(What % ) percent