[問題] 屈臣氏85折扣下好像算錯了
被85折燒到
昨晚跑去屈臣氏排隊買
曼秀雷敦水潤spf50*2 $159*2
曼秀雷敦水潤spf25*1 $159*1
巴黎萊雅三色光譜美白粉餅*1 $549*1
妮維雅嫩白潤膚乳液(125ml)*2 $ 99*2
新柔抽取式衛生紙*2 $ 89*2 <註:小屈標價寫一包76,兩包一包算68>
(在發票上面於衛生紙下面標註$-19)
實收$1257
衛生紙標價和結算價不一樣就先別管它
但是我怎麼算還是都算不出這價錢是怎麼來的
如果是曼秀雷敦$159就不再折扣
這樣算起來不就是
曼秀雷敦159*3+{[(衛生紙$89*2-19)+(巴黎萊雅$549)+(妮維雅乳液$99*2)]*0.85}
=$477+{[$159+$549+$198]*0.85}
=$477+$770.1
=$1247.1
尾數無條件進入是$1248
這樣是比$1257差了一點
雖然只是小錢,但是就是有種"乃 ㄧㄜˋ"的感覺
還是我搞錯屈臣氏的折價方法了???
請好心的大大們解答,拜託了
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