well there are diff scenarios.. e.g. it could specifically state that it's a 2 sector eco, or it won't give you taxation values. but generally in questions such as "find equilibrium level of income", you would use c + s
The one for real GDP, where it has Nominal/CPI *100 -- is that just assuming that CPI in the base year is 100? Cause if it was say 120, wouldn't you have to multiply by 120