Suppose nominal GDP was $360 billion in 1990 and $450 billion in 2000. The appropriate price index (1985 = 100) was 120 in 1990 and 125 in 2000. Between 1990 and 2000 real GDP: a) decreased by $32 billion. b) increased by $60 billion. c) increased by $100 billion. d) increased by $117 billion. ANSWER: b) increased by $60 billion.