Help me to do this question!

Calculate gross national product at factor cost from the following data by (a) income method and (b) expenditure method.
(CBSE, Delhi 2002)

Particulars	₹in crores
(i) Wages and salaries	800
(ii) Mixed income of self-employed	160
(iii) Operating surplus	600
(iv) Undistributed profits	150
(v) Gross capital formation	330
(vi) Change in stocks	25
(vii) Net capital formation	300
(viii) Employers' contribution to social security schemes	100
(ix) Net factor income from abroad	(–) 20
(x) Exports	30
(xi) Imports	60
(xii) Private final consumption expenditure	1,000
(xiii) Government final consumption expenditure	450
(xiv) Net indirect taxes	60
(xv) Compensation of employees paid by the Government	75

Note: Consumption of Fixed Capital is calculated as the difference between (v) and (vii) item.
Gross National Product at Factor Cost = 1,670 cr

Dear student,
(1) GROSS NATIONAL PRODUCT AT FACTOR COST BY INCOME METHOD
                                                                                                                                                (all figures are in crores)
   NET DOMESTIC DOMESTIC PRODUCT AT FACTOR COST(NDP FC) =  COMPENSATION OF EMPLOYEES *+ OPERATING SURPLUS + MIXED INCOME OF SELF EMPLOYED
NDPFC= 900 + 600 +160 = 1660

Compensation of employees = Wages & salaries (800) + Employers contribution to social security schemes (100)
                                                   = 900

GROSS NATIONAL PRODUCT AT FACTOR COST = NET DOMESTIC PRODUCT AT FACTOR COST + Depreciation + Net factor income from abroad
 GROSS NATIONAL PRODUCT AT FACTOR COST = 1660 +30+ (-20)
                                                                                          = 1670

(2) GROSS NATIONAL PRODUCT AT FACTOR COST BY EXPENDITURE METHOD
  
    GROSS DOMESTIC PRODUCT AT MARKET PRICE = Private final consumption expenditure + government final consumption expenditure + Gross capital  formation + Net exports(exports- imports)
   
  GROSS DOMESTIC PRODUCT AT MARKET PRICE = 1000+450+330-30    =1750
                                                                                     
 GNP AT FACTOR COST = GDP AT MARKET PRICE - Net indirect taxes + Net factor income from abroad
                                         = 1750 - 60 -20 = 1670
 
Regards