480÷[(1+20%)×80%]
=480÷[120%×80%],
=480÷96%,
=500(元);
答:原价是500元.
一套服装先涨价20%,后来又打八折,现在卖480元,这套服装原价多少元?
一套服装先涨价20%,后来又打八折,现在卖480元,这套服装原价多少元?
数学人气:691 ℃时间:2019-11-22 23:35:29
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