(b)the income-tax chargeable shall be calculated as follows:-(i)the total income and the net agricultural income shall be aggregated and the amount of income-tax shall be determined in respect of the aggregate income at the rates specified in the said Paragraph A, as if such aggregate income were the total income;(ii)the net agricultural income shall be increased by a sum of two lakh rupees, and the amount of income-tax shall be determined in respect of the net agricultural income as so increased at the rates specified in the said Paragraph A, as if the net agricultural income as so increased were the total income;(iii)the amount of income-tax determined in accordance with sub-clause (i) shall be reduced by the amount of income-tax determined in accordance with sub-clause (ii) and the sum so arrived at shall be the income-tax in respect of the total income: