These the ones I don't get

Question 4 (1 point) If nominal GDP in some year is $280 and real GDP is $160. The price index for that year is Blank 1: Question 5 (1 point) If the price index in some year is 60 and real GDP is $80. The nominal GDP for that year is Blank 1: Question 6 (1 point) T/F: If nominal GDP is $150 and GDP price index is 200, real GDP is $75 O True O False Question 7 (1 point) T/F: If GDP price index is 150 and nominal GDP is $50, real GDP is $200 O True O False Question 8 (1 point) T/F: If real GDP is $50 and nominal GDP is $100, GDP price index is 200 O True O False