退稅和折扣的計算方式 - 旅遊
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By Lydia
at 2015-03-22T09:38
at 2015-03-22T09:38
Table of Contents
有一個問題困擾我很久了
就是退稅和折扣的計算方式
A:含稅額 B:免稅額 A=1.08B
如果買一個物品A 加可以打九折
該付的錢到底是
A/1.08 * 0.9 還是 A*0.9-(0.08B)
一個是免稅額打九折另一個是含稅九折在退稅給你
二個是不等式
謝謝
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