Calculate NNP(FC)

Sales 21,000
Change in stock 9,000
Depreciation 2,000
Wages 7,000
Compensation to employees 3,000
Profit 3,000
Interest 1,000
Rent 1,000

@Sourav, although you made a nice attempt, but committed a calculation mistake in the second step (precisely while adding).

NDP_​FC = Compensation to Employees + Operating Surplus + Mixed Income
NDP_​FC = Compensation to Employees + (Rent + Interest + Profit) + Mixed Income
NDP_​FC = 3000 + (1000 + 1000 + 3000) + 0
NDP_​FC = 8,000

NNP_​FC = NDP_​FC + NFIA = 8000 + 0 = 8,000
so, NNP_​FC = Rs 8,000