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20 GDP using the income approach = billion. NDP = billion. 0.65 points 01:14:34 b. Now determine NI in two ways: first, by making the required additions or subtractions from NDP (method 1); and second, by adding up the types of income and taxes that make up NI (method 2). Method 1 = billion . eBook Method 2 = billion. References c. Adjust NI (from part b) as required to obtain PI. PI = billion . d. Adjust PI (from part c) as required to obtain DI. DI = billion. Graw Education