Economics. Answer following by question.

QUESTION 1 The data below shows the value of economics activities of a country in year 1999. ITEMS RM (MILLIONS) Consumption expenditure 30 Exports 10 Government expenditure 25 Change in stock -5 Personal income tax 3 Imports 15 Taxes on expenditure Transfer payment 5 Wages and salaries 30 Capital consumption 5 Employees provident fund 2 subsidies 4 Net factor income from abroad 50 Private investment 20 Based on the above information calculate the: Gross domestic product at factor cost (4M) Gross National product at market price (2M) Gross national product at factor cost (2M) National income (2M) Disposable national income (5M) Analysis of FIVE (5) problems that are often encountered when calculating national income. (10M)