Question

The national economic accounts for the Republic of Kwararafa in a given fiscal year are as follows:

- Personal Consumption Expenditure ($C$): $\text{��}450\text{ billion}$
- Gross Private Domestic Investment ($I$): $\text{₦}180\text{ billion}$
- Government Spending ($G$): $\text{₦}220\text{ billion}$
- Exports ($X$): $\text{₦}95\text{ billion}$
- Imports ($M$): $\text{₦}115\text{ billion}$
- Net Factor Income from Abroad ($NFIA$): $-\text{₦}15\text{ billion}$
- Capital Consumption Allowance: $\text{₦}40\text{ billion}$

Based on the expenditure method, calculate the Gross National Product (GNP) at market prices in billions of Naira.