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答《一道难题》田天禧关于以旧进价差率改为相等差价，合理增值税金，售价计算公式；不含税进价差率＝不含税差价÷不含税进价＝（含税进价×原进价差率－含税销售价×原税率）÷不含税进价含税售价＝不含税进价×（１＋不含税进价差率）÷［１÷（１＋增值税率）］＝不含...
Answer “a difficult problem” Tian Tianxi on the old price difference into the equal difference, reasonable value-added tax, the price calculation formula; not included in the price difference = non-tax difference ÷ tax-free into the price = The original into the price difference - the price of tax sales price × the original tax rate) ÷ tax not included in the price of tax price = tax price × (1 + tax-free into the price difference) ÷ [1 ÷ (1 + VAT rate)] = Excluding ...